Thursday, April 28, 2016

Henri-Louis Bergson (18 October 1859 – 4 January 1941)

Henri-Louis Bergson ( 18 October 1859 – 4 January 1941) was a major French philosopher, influential especially in the first half of the 20th century. Bergson convinced many thinkers that the processes of immediate experience and intuition are more significant than abstract rationalism and science for understanding reality.
He was awarded the 1927 Nobel Prize in Literature "in recognition of his rich and vitalizing ideas and the brilliant skill with which they have been presented". In 1930 France awarded him its highest honour, the Grand-Croix de la Legion d'honneur.
Henri Bergson was born in Paris to an English mother ans a polish Jewish father, and grew up with French as his mother tongue. 
Henri Bergson's family lived in London for a few years after his birth, and he obtained an early familiarity with the English language from his mother. Before he was nine, his parents settled in France, Henri becoming a naturalized French citizen.
Henri Bergson married Louise Neuberger, a cousin of Marcel Proust (1871–1922), in 1891. (The novelist served as best man at Bergson's wedding.) Henri and Louise Bergson had a daughter, Jeanne, born deaf in 1896. Bergson's sister, Mina Bergson (also known as Moina Mathers), married the English occult author Samuel Liddell MacGregor Mathers, a founder of the Hermetic Order of the Golden Dawn, and the couple later relocated to Paris as well.
Bergson lived the quiet life of a French professor, marked by the publication of his four principal works:
  1. in 1889, Time and Free Will (Essai sur les données immédiates de la conscience)
  2. in 1896, Matter and Memory (Matière et mémoire)
  3. in 1907, Creative Evolution (L'Évolution créatrice)
  4. in 1932, The Two Sources of Morality and Religion (Les deux sources de la morale et de la religion)
In 1900 the College of France selected Bergson to a Chair of Greek and Latin Philosophy, which he held until 1904. He then replaced Gabriel Tarde in the Chair of Modern Philosophy, which he held until 1920. The public attended his open courses in large numbers.
The year after his arrival at Clermont-Ferrand Bergson displayed his ability in the humanities by the publication of an edition of extracts from Lucretius, with a critical study of the text and of thematerialist cosmology of the poet (1884), a work whose repeated editions give sufficient evidence of its useful place in the promotion of classical study among the youth of France. While teaching and lecturing in this part of his country (the Auvergne region), Bergson found time for private study and original work. He crafted his dissertation Time and Free Will, which was submitted, along with a short Latin thesis on Aristotle (Quid Aristoteles de loco senserit, "On the Concept of Place in Aristotle"), for his doctoral degree which was awarded by the University of Paris in 1889. The work was published in the same year by Félix Alcan. He also gave courses in Clermont-Ferrand on the Pre-Socratics, in particular on Heraclitus.
Bergson dedicated Time and Free Will to Jules Lachelier (1832–1918), then public education minister, a disciple of Félix Ravaisson (1813–1900) and the author of a philosophical work On the Founding of Induction (Du fondement de l'induction, 1871). Lachelier endeavoured "to substitute everywhere force for inertia, life for death, and liberty for fatalism". (Bergson owed much to both of these teachers of the École Normale Supérieure. Compare his memorial address on Ravaisson, who died in 1900.)
Bergson settled again in Paris in 1888, and after teaching for some months at the municipal college, known as the College Rollin, he received an appointment at the Lycée Henri-Quatre, where he remained for eight years. There, he read Darwin and gave a course on his theories. Although Bergson had previously endorsedLamarckism and its theory of the heritability of acquired characteristics, he came to prefer Darwin's hypothesis of gradual variations, which were more compatible with his continuist vision of life.
In 1896 he published his second major work, entitled Matter and Memory. This rather difficult work investigates the function of the brain and undertakes an analysis of perception and memory, leading up to a careful consideration of the problems of the relation of body and mind. Bergson had spent years of research in preparation for each of his three large works. This is especially obvious in Matter and Memory, where he showed a thorough acquaintance with the extensive pathological investigations which had been carried out during the period.
In 1898 Bergson became maître de conférences at his alma mater, École Normale Supérieure, and later in the same year received promotion to a Professorship. The year 1900 saw him installed as Professor at the Collège de France, where he accepted the Chair ofGreek and Latin Philosophy in succession to Charles Lévêque (fr).
At the first International Congress of Philosophy, held in Paris during the first five days of August, 1900, Bergson read a short, but important, paper, "Psychological Origins of the Belief in the Law of Causality" (Sur les origines psychologiques de notre croyance à la loi de causalité). In 1900 Felix Alcan published a work which had previously appeared in the Revue de Paris, entitled Laughter (Le rire), one of the most important of Bergson's minor productions. This essay on the meaning of comedy stemmed from a lecture which he had given in his early days in the Auvergne. The study of it is essential to an understanding of Bergson's views of life, and its passages dealing with the place of the artistic in life are valuable. The main thesis of the work is that laughter is a corrective evolved to make social life possible for human beings. We laugh at people who fail to adapt to the demands of society, if it seems their failure is akin to an inflexible mechanism. Comic authors have exploited this human tendency to laugh in various ways, and what is common to them is the idea that the comic consists in there being "something mechanical encrusted on the living".
In 1901 the Académie des sciences morales et politiques elected Bergson as a member, and he became a member of the Institute. In 1903 he contributed to the Revue de métaphysique et de morale a very important essay entitled Introduction to Metaphysics (Introduction à la metaphysique), which is useful as a preface to the study of his three large books. He detailed in this essay his philosophical program, realized in the Creative Evolution.
On the death of Gabriel Tarde, the sociologist and philosopher, in 1904, Bergson succeeded him in the Chair of Modern Philosophy. From 4 to 8 September of that year he visited Geneva, attending the Second International Congress of Philosophy, when he lectured on The Mind and Thought: A Philosophical Illusion (Le cerveau et la pensée: une illusion philosophique). An illness prevented his visiting Germany to attend the Third Congress held at Heidelberg.
His third major work, Creative Evolution, the most widely known and most discussed of his books, appeared in 1907. Pierre Imbart de la Tour remarked that Creative Evolution was a milestone of new direction in thought. By 1918, Alcan, the publisher, had issued twenty-one editions, making an average of two editions per annum for ten years. Following the appearance of this book, Bergson's popularity increased enormously, not only in academic circles, but among the general reading public.
At that time, Bergson had already made an extensive study of biology, knowing of the theory of fecundation (as shown by the first chapter of the Creative Evolution), which had only recently emerged, ca. 1885 — no small feat for a philosopher specializing in the history of philosophy, in particular of Greek and Latin philosophy. He also most certainly had read, apart from Darwin, Haeckel, from whom he retained his idea of a unity of life and of the ecological solidarity between all living beings,as well as Hugo de Vries, from whom he quoted his mutation theory of evolution (which he opposed, preferring Darwin's gradualism). He also quoted Charles-Édouard Brown-Séquard, the successor of Claude Bernard at the Chair of Experimental Medicine in the Collège de France, etc.
Bergson served as a juror with Florence Meyer Blumenthal in awarding the Prix Blumenthal, a grant given between 1919–1954 to painters, sculptors, decorators, engravers, writers, and musicians.

Relationship with James and Pragmatism

Bergson travelled to London in 1908 and met there with William James, the Harvard philosopher who was Bergson's senior by seventeen years, and who was instrumental in calling the attention of the Anglo-American public to the work of the French professor. The two became great friends. James's impression of Bergson is given in his Letters under date of 4 October 1908:
"So modest and unpretending a man but such a genius intellectually! I have the strongest suspicions that the tendency which he has brought to a focus, will end by prevailing, and that the present epoch will be a sort of turning point in the history of philosophy."
As early as 1880, James had contributed an article in French to the periodical La Critique philosophique, of Renouvier and Pillon, entitledLe Sentiment de l'Effort. Four years later, a couple of articles by him appeared in the journal Mind: "What is an Emotion?" and "On some Omissions of Introspective Psychology". Bergson quoted the first two of these articles in his 1889 work, Time and Free Will. In the following years 1890–91 appeared the two volumes of James's monumental work, The Principles of Psychology, in which he refers to a pathological phenomenon observed by Bergson. Some writers, taking merely these dates into consideration and overlooking the fact that James's investigations had been proceeding since 1870 (registered from time to time by various articles which culminated in "The Principles"), have mistakenly dated Bergson's ideas as earlier than James's.
It has been suggested that Bergson owes the root ideas of his first book to the 1884 article by James, "On Some Omissions of Introspective Psychology," which he neither refers to nor quotes. This article deals with the conception of thought as a stream of consciousness, which intellect distorts by framing into concepts. Bergson replied to this insinuation by denying that he had any knowledge of the article by James when he wrote Les données immédiates de la conscience. The two thinkers appear to have developed independently until almost the close of the century. They are further apart in their intellectual position than is frequently supposed. Both have succeeded in appealing to audiences far beyond the purely academic sphere, but only in their mutual rejection of "intellectualism" as final is there real unanimity. Although James was slightly ahead in the development and enunciation of his ideas, he confessed that he was baffled by many of Bergson's notions. James certainly neglected many of the deeper metaphysical aspects of Bergson's thought, which did not harmonize with his own, and are even in direct contradiction. In addition to this, Bergson can hardly be considered a pragmatist. For him, "utility," far from being a test of truth, was in fact the reverse: a synonym for error.
Nevertheless, William James hailed Bergson as an ally. In 1903, he wrote:
I have been re-reading Bergson's books, and nothing that I have read since years has so excited and stimulated my thoughts. I am sure that that philosophy has a great future, it breaks through old cadres and brings things into a solution from which new crystals can be got.
The most noteworthy tributes James paid to Bergson come in the Hibbert Lectures (A Pluralistic Universe), which James gave atManchester College, Oxford, shortly after meeting Bergson in London. He remarks on the encouragement he has received from Bergson's thought, and refers to the confidence he has in being "able to lean on Bergson's authority." (Also see James's reservations about Bergson below.)
The influence of Bergson had led James "to renounce the intellectualist method and the current notion that logic is an adequate measure of what can or cannot be". It had induced him, he continued, "to give up logic, squarely and irrevocably" as a method, for he found that "reality, life, experience, concreteness, immediacy, use what word you will, exceeds our logic, overflows, and surrounds it".
These remarks, which appeared in James's book A Pluralistic Universe in 1909, impelled many English and American readers to an investigation of Bergson's philosophy for themselves, but no English translations of Bergson's major work had yet appeared. James, however, encouraged and assisted Dr. Arthur Mitchell in his preparation of the English translation of Creative Evolution. In August 1910, James died. It was his intention, had he lived to see the completion of the translation, to introduce it to the English reading public by a prefatory note of appreciation. In the following year the translation was completed and still greater interest in Bergson and his work was the result. By coincidence, in that same year (1911), Bergson penned a preface of sixteen pages entitled Truth and Reality for the French translation of James's book, Pragmatism. In it he expressed sympathetic appreciation of James's work, coupled with certain important reservations.
From April 5 to 11, Bergson attended the Fourth International Congress of Philosophy held at Bologna, in Italy, where he gave an address on "Philosophical Intuition". In response to invitations he visited England in May of that year, and on several subsequent occasions. These visits were well received. His speeches offered new perspectives and elucidated many passages in his three major works:Time and Free WillMatter and Memory, and Creative Evolution. Although necessarily brief statements, they developed and enriched the ideas in his books and clarified for English audiences the fundamental principles of his philosophy.

Edmund Husserl ( 8 April 1859 – 27 April 1938)

Edmund Gustav Albrecht Husserl ( 8 April 1859 – 27 April 1938) was a German philosopher who established the school of phenomenology. In his early work, he elaborated critiques of historicism and of psychologism in logic based on analyses of intentionality. In his mature work, he sought to develop a systematic foundational science based on the so-called phenomenological reduction. Arguing that transcendental consciousness sets the limits of all possible knowledge, Husserl re-defined phenomenology as a transcendental-idealist philosophy. Husserl's thought profoundly influenced the landscape of twentieth-century philosophy and he remains a notable figure in contemporary philosophy and beyond.
Husserl studied mathematics under Karl Weierstrass and Leo Königsberger, and philosophy under Franz Brentano and Carl Stumpf. He taught philosophy as a Privatdozent at Hallefrom 1887, then as professor, first at Göttingen from 1901, then at Freiburg from 1916 until he retired in 1928, after which he remained highly productive. Following an illness, he died at Freiburg in 1938.
Husserl was born in 1859 in Prostějov (GermanProssnitz), a town in the Margraviate of Moravia, which was then in the Austrian Empire, and now belongs to the Czech Republic. He was born into a Jewish family, the second of four children (boy, boy, girl, boy). His father was a milliner. His childhood was spent in Prostějov, where he attended the elementary school. Then Husserl traveled to Vienna to study at the Realgymnasium there, followed next by the Staatsgymnasium in Olomouc (Ger.: Olmütz).[13][14]
At the University of Leipzig from 1876 to 1878, Husserl studied mathematicsphysics, andastronomy. At Leipzig he was inspired by philosophy lectures given by Wilhelm Wundt, one of the founders of modern psychology. Then he moved to the Frederick William University of Berlin in 1878 where he continued his study of mathematics under Leopold Kronecker and the renowned Karl Weierstrass. In Berlin he found a mentor in Thomas Masaryk, then a former philosophy student of Franz Brentano and later the first president of Czechoslovakia. There Husserl also attended Friedrich Paulsen's philosophy lectures. In 1881 he left for theUniversity of Vienna to complete his mathematics studies under the supervision of Leo Königsberger (a former student of Weierstrass). At Vienna in 1883 he obtained his PhD with the work Beiträge zur Variationsrechnung ("Contributions to the Calculus of Variations").
Evidently as a result of his becoming familiar with the New Testament during his twenties, he asked to be baptized into the Lutheran Church in 1886. Husserl's father Adolf had died in 1884. Herbert Spiegelberg writes, "While outward religious practice never entered his life any more than it did that of most academic scholars of the time, his mind remained open for the religious phenomenon as for any other genuine experience." At times Husserl saw his goal as one of moral "renewal". Although a steadfast proponent of a radical and rational autonomy in all things, Husserl could also speak "about his vocation and even about his mission under God's will to find new ways for philosophy and science," observes Spiegelberg.
Following his PhD in mathematics, he returned to Berlin to work as the assistant to Karl Weierstrass. Yet already Husserl had felt the desire to pursue philosophy. Then professor Weierstrass became very ill. Husserl became free to return to Vienna where, after serving a short military duty, he devoted his attention to philosophy. In 1884 at the University of Vienna he attended the lectures of Franz Brentanoon philosophy and philosophical psychology. Brentano introduced him to the writings of Bernard BolzanoHermann LotzeJ. Stuart Mill, and David Hume. Husserl was so impressed by Brentano that he decided to dedicate his life to philosophy; indeed, Franz Brentano is often credited as being his most important influence, e.g., with regard to intentionality. Following academic advice, two years later in 1886 Husserl followed Carl Stumpf, a former student of Brentano, to the University of Halle, seeking to obtain his habilitation which would qualify him to teach at the university level. There, under Stumpf's supervision, he wrote Über den Begriff der Zahl (On the Concept of Number) in 1887, which would serve later as the basis for his first important work, Philosophie der Arithmetik (1891).
In 1887 he married Malvine Steinschneider, a union that would last over fifty years. In 1892 their daughter Elizabeth was born, in 1893 their son Gerhart, and in 1894 their son Wolfgang. Elizabeth would marry in 1922, and Gerhart in 1923; Wolfgang, however, became a casualty of the First World War. Gerhart would become a philosopher of law, contributing to the subject of comparative law, teaching in the USA and after the war in Austria

Professor of philosophy


Edmund Husserl c. 1900
Following his marriage Husserl began his long teaching career in philosophy. He started where he was in 1887 as a Privatdozent at the University of Halle. In 1891 he published his Philosophie der Arithmetik. Psychologische und logische Untersuchungen which, drawing on his prior studies in mathematics and philosophy, proposed a psychological context as the basis of mathematics. It drew the adverse notice of Gottlob Frege, who criticized its psychologism.
In 1901 Husserl with his family moved to the University of Göttingen where he taught asextraordinarius professor. Just prior to this a major work of his, Logische Untersuchungen (Halle 1900–1901), was published. Volume One contains seasoned reflections on "pure logic" in which he carefully refutes "psychologism". This work was well received and became the subject of a seminar given by Wilhelm Dilthey; Husserl in 1905 traveled to Berlin to visit Dilthey. Two years later in Italy he paid a visit to Franz Brentano his inspiring old teacher and to Constantin Carathéodory the mathematician. Kant and Descartes were also now influencing his thought. In 1910 he became joint editor of the journal Logos. During this period Husserl had delivered lectures on internal time consciousness, which several decades later his former student Heidegger edited for publication.

Sunday, April 3, 2016

Martin Heidegger (1889 - 1971)

Martin Hiedegger was born in Baden, Germany,in the year Wittgenstein was born in Vienna. He lived in Germany all his life and also was an academic all his life.  He was a German Philosopher and philosophical hermeneutics, with a growing influence on Analytic philosophy. According to the IEP, he is "widely acknowledged to be one of the most original and important philosophers of the 20th century."
 Heidegger is best known for his contributions to Phenomenology and Existentialism, though as the SEP cautions, "his thinking should be identified as part of such philosophical movements only with extreme care and qualification."
His first and best known book, Being and Time (1927), though unfinished, is one of the central philosophical works of the 20th century. In the first division of the work, Heidegger attempted to turn away from "ontic" questions about beings to ontological questions about Being, and recover the most fundamental philosophical question: the question of Being, of what it means for something to be. Heidegger approached the question through an inquiry into the being that has an understanding of Being, and asks the question about it, namely, Human being, which he called Dasein ("being-there"). Heidegger argued that Dasein is defined by Care, its practically engaged and concernful mode of Being-in-the-world, in opposition to Rationalist thinkers like René Descartes who located the essence of man in our thinking abilities. For Heidegger thinking is thinking about things originally discovered in our everyday practical engagements. The consequence of this is that our capacity to think cannot be the most central quality of our being because thinking is a reflecting upon this more original way of discovering the world. In the second division, Heidegger argues that human being is even more fundamentally structured by its Temporality, or its concern with, and relationship to time, existing as a structurally open "possibility-for-being." He emphasized the importance of Authenticity in human existence, involving a truthful relationship to our thrownness into a world which we are "always already" concerned with, and to our Being-towards-death, the Finitude of the time and being we are given, and the closing down of our various possibilities for being through time.
Heidegger also made critical contributions to philosophical conceptions of truth, arguing that its original meaning was unconcealment, to philosophical analyses of art as a site of the revelation of truth, and to philosophical understanding of language as the "house of being." Heidegger's later work includes criticisms of technology's instrumentalist understanding in the Western tradition as "enframing," treating all of Nature as a "standing reserve" on call for human purposes. Heidegger is a controversial figure, largely for his affiliation with Nazism, as Rector of the University of Freiburg for 11 months prior to his resignation in April 1934, for which he neither apologized nor publicly expressed regret, although in private he called it "the biggest stupidity of his life" (die größte Dummheit seines Lebens).

Early years


The Mesnerhaus in Meßkirch, where Heidegger grew up
He was born in rural Meßkirch, Germany. Raised a Roman Catholic, he was the son of the sextonof the village church that adhered to the First Vatican Council of 1870, which was observed mainly by the poorer class of Meßkirch. His family could not afford to send him to university, so he entered a Jesuit seminary, though he was turned away within weeks because of the health requirement and what the director and doctor of the seminary described as a psychosomaticheart condition. Heidegger was short and sinewy, with dark piercing eyes. He enjoyed outdoor pursuits, being especially proficient at skiing.
Studying theology at the University of Freiburg while supported by the church on the understanding that he would defend their doctrine, Heidegger broke with Catholicism and switched his field of study to philosophy. He completed his doctoral thesis on psychologism in 1914, influenced by Neo-Thomism and Neo-Kantianism, and in 1916 finished his venia legendiwith a thesis on Duns Scotus influenced by Heinrich Rickert and Edmund Husserl.
In the two years following, he worked first as an unsalaried Privatdozent. He served as a soldier during the final year of World War I, working behind a desk and never leaving Germany. During the 1930s, critics of Heidegger's espousal of a Nazi-style rhetoric of martial manliness noted the unheroic nature of his service in WWI.

Marburg

In 1923, Heidegger was elected to an extraordinary Professorship in Philosophy at the University of Marburg. His colleagues there included Rudolf BultmannNicolai Hartmann, and Paul Natorp. Heidegger's students at Marburg included Hans-Georg GadamerHannah ArendtKarl LöwithGerhard KrügerLeo StraussJacob KleinGunther (Stern) Anders, and Hans Jonas. Following on from Aristotle, he began to develop in his lectures the main theme of his philosophy: the question of the sense of being. He extended the concept of subject to the dimension of history and concrete existence, which he found prefigured in such Christian thinkers as Saint PaulAugustine of HippoLuther, and Kierkegaard. He also read the works of DiltheyHusserl, and Max Scheler.

Freiburg

In 1927, Heidegger published his main work Sein und Zeit (Being and Time). When Husserl retired as Professor of Philosophy in 1928, Heidegger accepted Freiburg's election to be his successor, in spite of a counter-offer by Marburg. Heidegger remained at Freiburg im Breisgau for the rest of his life, declining a number of later offers, including one from Humboldt University of Berlin. His students at Freiburg included Arendt, Günther AndersHans JonasKarl LöwithCharles MalikHerbert Marcuse and Ernst NolteEmmanuel Levinas attended his lecture courses during his stay in Freiburg in 1928]
Heidegger was elected rector of the University on 21 April 1933, and joined the National Socialist German Workers' (Nazi) Party on 1 May. In his inaugural address as rector on 27 May he expressed his support of a German revolution, and in an article and a speech to the students from the same year he also supported Adolf Hitler. In November 1933 Heidegger signed the Loyalty Oath of German Professors to Adolf Hitler and the National Socialist State. He resigned the rectorate in April 1934, but remained a member of the Nazi party until 1945 even though (as Julian Young asserts) the Nazis eventually prevented him from publishing.
According to historian Richard J. Evans, Heidegger was not only a member of the Nazi party, but was enthusiastic about participating. He wanted to position himself as the philosopher of the party, but the highly abstract nature of his work and the opposition of Alfred Rosenberg, who himself aspired to act in that position, limited Heidegger's role. His resignation from the rectorate owed more to his frustration as an administrator than to any principled opposition to the Nazis.
Heidegger's Black Notebooks, written between 1931 and 1941 and first published in 2014, contain several anti-semitic statements and have led to a re-evaluation of Heidegger's relation to Nazism.

Post-war

In late 1946, as France engaged in épuration légale in its Occupation zone, the French military authorities determined that Heidegger should be blocked from teaching or participating in any university activities because of his association with the Nazi Party. Thedenazification procedures against Heidegger continued until March 1949 when he was finally pronounced a Mitläufer (the second lowest of five categories of "incrimination" by association with the Nazi regime). No punitive measures against him were proposed.This opened the way for his readmission to teaching at Freiburg University in the winter semester of 1950–51. He was granted emeritus status and then taught regularly from 1951 until 1958, and by invitation until 1967.

Personal life


Heidegger's stone-and-tile chalet clustered among others at Todtnauberg
Heidegger married Elfride Petri on 21 March 1917, in a Catholic ceremony officiated by his friend Engelbert Krebs, and a week later in a Protestant ceremony in the presence of her parents. Their first son, Jörg, was born in 1919. Elfride then gave birth to Hermann in 1920. Heidegger knew that he was not Hermann's biological father but raised him as his son. Hermann became a historian and would later serve as the executor of Heidegger's will.
Martin Heidegger had extramarital affairs with Hannah Arendt and Elisabeth Blochmann, both students of his. Arendt was Jewish, and Blochmann had one Jewish parent, making them subject to severe persecution by the Nazi authorities. He helped Blochmann emigrate from Germany prior to World War II and resumed contact with both of them after the war. Heidegger's letters to his wife contain information about several other affairs of his.
Heidegger spent much time at his vacation home at Todtnauberg, on the edge of the Black Forest. He considered the seclusion provided by the forest to be the best environment in which to engage in philosophical thought.

Heidegger's grave in Meßkirch
A few months before his death, he met with Bernhard Welte, a Catholic priest, Freiburg university professor and earlier correspondent. The exact nature of the conversation is not known, but what is known is that it included talk of Heidegger's relationship to the Catholic Church and subsequent Christian burial at which the priest officiated. Heidegger died on 26 May 1976, and was buried in the Meßkirch cemetery, beside his parents and brother.

Philosophy

Being, time, and Dasein

Heidegger's philosophy is founded on the attempt to conjoin what he considers two fundamental insights: the first is his observation that, in the course of over 2,000 years of history, philosophy has attended to all the beings that can be found in the world (including the world itself), but has forgotten to ask what Being itself is. Heidegger thought the presence of things for us is not their being, but merely them interpreted as equipment according to a particular system of meaning and purpose. For instance, when a hammer is efficiently used to knock in nails, we cease to be aware of it. This is termed "ready to hand", and Heidegger considers it an authentic mode, saying that the given ("past") has presence in an oversimplified way when reduced to possible future usefulness to us.
Heidegger claimed philosophy and science since ancient Greece had reduced things to their presence, which was a superficial way of understanding them. One crucial source of this insight was Heidegger's reading of Franz Brentano's treatise on Aristotle's manifold uses of the word "being", a work which provoked Heidegger to ask what kind of unity underlies this multiplicity of uses. Heidegger opens his magnum opus, Being and Time, with a citation from Plato's Sophist indicating that Western philosophy has neglected Being because it was considered obvious, rather than as worthy of question. Heidegger's intuition about the question of Being is thus a historical argument, which in his later work becomes his concern with the "history of Being", that is, the history of the forgetting of Being, which according to Heidegger requires that philosophy retrace its footsteps through a productive destruction of the history of philosophy.
The second intuition animating Heidegger's philosophy derives from the influence of Edmund Husserl, a philosopher largely uninterested in questions of philosophical history. Rather, Husserl argued that all that philosophy could and should be is a description of experience (hence the phenomenological slogan, "to the things themselves"). But for Heidegger, this meant understanding that experience is always already situated in a world and in ways of being. Thus Husserl's understanding that all consciousness is "intentional" (in the sense that it is always intended toward something, and is always "about" something) is transformed in Heidegger's philosophy, becoming the thought that all experience is grounded in "care". This is the basis of Heidegger's "existential analytic", as he develops it in Being and Time. Heidegger argues that describing experience properly entails finding the being for whom such a description might matter. Heidegger thus conducts his description of experience with reference to "Dasein", the being for whom Being is a question.
In Being and Time, Heidegger criticized the abstract and metaphysical character of traditional ways of grasping human existence as rational animal, person, man, soul, spirit, or subject. Dasein, then, is not intended as a way of conducting a philosophical anthropology, but is rather understood by Heidegger to be the condition of possibility for anything like a philosophical anthropology. Dasein, according to Heidegger, is care. In the course of his existential analytic, Heidegger argues that Dasein, who finds itself thrown into the world (Geworfenheit) amidst things and with others, is thrown into its possibilities, including the possibility and inevitability of one's own mortality. The need for Dasein to assume these possibilities, that is, the need to be responsible for one's own existence, is the basis of Heidegger's notions of authenticity and resoluteness—that is, of those specific possibilities for Dasein which depend on escaping the "vulgar" temporality of calculation and of public life.
The marriage of these two observations depends on the fact that each of them is essentially concerned with time. That Dasein is thrown into an already existing world and thus into its mortal possibilities does not only mean that Dasein is an essentially temporal being; it also implies that the description of Dasein can only be carried out in terms inherited from the Western tradition itself. For Heidegger, unlike for Husserl, philosophical terminology could not be divorced from the history of the use of that terminology, and thus genuine philosophy could not avoid confronting questions of language and meaning. The existential analytic of Being and Time was thus always only a first step in Heidegger's philosophy, to be followed by the "dismantling" (Destruktion) of the history of philosophy, that is, a transformation of its language and meaning, that would have made of the existential analytic only a kind of "limit case" (in the sense in which special relativity is a limit case of general relativity).
That Heidegger did not write this second part of Being and Time, and that the existential analytic was left behind in the course of Heidegger's subsequent writings on the history of being, might be interpreted as a failure to conjugate his account of individual experience with his account of the vicissitudes of the collective human adventure that he understands the Western philosophical tradition to be. And this would in turn raise the question of whether this failure is due to a flaw in Heidegger's account of temporality, that is, of whether Heidegger was correct to oppose vulgar and authentic time. There are also recent critiques in this regard that were directed at Heidegger's focus on time instead of primarily thinking about being in relation to place and space, and to the notion of dwelling, with connections too to architectural theory as impacted by phenomenology.

Being and Time


View from Heidegger's vacation chalet in Todtnauberg. Heidegger wrote most of Being and Time there.
Main article: Being and Time
Being and Time (German title: Sein und Zeit), published in 1927, was Heidegger's first academic book. He had been under pressure to publish in order to qualify for Husserl's (to whom he dedicated the work) chair at the University of Freiburg and the success of this work ensured his appointment to the post.
It investigates the question of Being by asking about the being for whom Being is a question. Heidegger names this being Dasein (see above), and the book pursues its investigation through themes such as mortality, care, anxiety, temporality, and historicity. It was Heidegger's original intention to write a second half of the book, consisting of a "Destruktion" of the history of philosophy—that is, the transformation of philosophy by re-tracing its history—but he never completed this project.
Being and Time influenced many thinkers, including such existentialist thinkers as Jean-Paul Sartre (although Heidegger distanced himself from existentialism—see below).

Later works: The Turn



Am Feldweg in Meßkirch. Heidegger often went for a walk on the path in this field. See the text Der Feldweg GA Nr. 13
Heidegger's later works, beginning by 1930 and largely established by the early 1940s, seem to many commentators (e.g. William J. Richardson) to at least reflect a shift of focus, if not indeed a major change in his philosophical outlook, which is known as "the turn" (die Kehre).One way this has been understood is as a shift from "doing" to "dwelling" and from Being and Time to Time and Being (This aspect had a particular influence on architectural theorists in their focus on place and space in thinking about dwelling. Such is the case with the work ofChristian Norberg-Schulz and the philosopher-architect Nader El-Bizri.) However, others feel that this is to overstate the difference. For example, in 2011 Mark Wrathall argued that Heidegger pursued and refined the central notion of unconcealment throughout his life as a philosopher. Its importance and continuity in his thinking, Wrathall states, shows that he did not have a "turn". A reviewer of Wrathall's book stated: "An ontology of unconcealment [...] means a description and analysis of the broad contexts in which entities show up as meaningful to us, as well as the conditions under which such contexts, or worlds, emerge and fade."
Heidegger focuses less on the way in which the structures of being are revealed in everyday behavior, and more on the way in which behaviour itself depends on a prior "openness to being." The essence of being human is the maintenance of this openness. Heidegger contrasts this openness to the "will to power" of the modern human subject, which is one way of forgetting this originary openness.
Heidegger understands the commencement of the history of Western philosophy as a brief period of authentic openness to being, during the time of the pre-Socratics, especially AnaximanderHeraclitus, and Parmenides. This was followed, according to Heidegger, by a long period increasingly dominated by the forgetting of this initial openness, a period which commences with Plato, and which occurs in different ways throughout Western history.
Two recurring themes of Heidegger's later writings are poetry and technology. Heidegger sees poetry and technology as two contrasting ways of "revealing." Poetry reveals being in the way in which, if it is genuine poetry, it commences something new. Technology, on the other hand, when it gets going, inaugurates the world of the dichotomous subject and object, which modern philosophy commencing with Descartes also reveals. But with modern technology a new stage of revealing is reached, in which the subject-object distinction is overcome even in the "material" world of technology. The essence of modern technology is the conversion of the whole universe of beings into an undifferentiated "standing reserve" (Bestand) of energy available for any use to which humans choose to put it. Heidegger described the essence of modern technology as Gestell, or "enframing." Heidegger does not unequivocally condemn technology: while he acknowledges that modern technology contains grave dangers, Heidegger nevertheless also argues that it may constitute a chance for human beings to enter a new epoch in their relation to being. Despite this, some commentators have insisted that an agrarian nostalgia permeates his later work.
In a 1950 lecture he formulated the famous saying Language speaks, later published in the 1959 essays collection Unterwegs zur Sprache, and collected in the 1971 English book Poetry, Language, Thought.
Heidegger's later works include Vom Wesen der Wahrheit ("On the Essence of Truth", 1930), Der Ursprung des Kunstwerkes ("The Origin of the Work of Art", 1935), Einführung in die Metaphysik ("Introduction to Metaphysics", 1935), Bauen Wohnen Denken ("Building Dwelling Thinking", 1951), and Die Frage nach der Technik ("The Question Concerning Technology", 1954) and Was heisst Denken? (What Is Called Thinking? 1954). Also Beiträge zur Philosophie (Vom Ereignis) (Contributions to Philosophy (From Enowning)), composed in the years 1936–38 but not published until 1989, on the centennial of Heidegger's birth.

Heidegger and the ground of History

Heidegger believed the Western world to be on a trajectory headed for total war, and on the brink of profound nihilism (the rejection of all religious and moral principles), which would be the purest and highest revelation of Being itself, offering a horrifying crossroads of either salvation or the end of metaphysics and modernity; rendering the West a wasteland populated by tool-using brutes, characterized by an unprecedented ignorance and barbarism in which everything is permitted. He thought the latter possibility would degenerate mankind generally into scientists, workers and brutes; living under the last mantle of one of three ideologies, AmericanismMarxism or Nazism (which he deemed metaphysically identical, as avatars of subjectivity and institutionalized nihilism), and an unfettered totalitarian world technology. Supposedly, this epoch would be ironically celebrated, as the most enlightened and glorious in human history. He envisaged this abyss to be the greatest event in the West's history because it would enable Humanity to comprehend Being more profoundly and primordially than the Pre-Socratics.

Influences

St. Augustine of Hippo

Recent scholarship has shown that Heidegger was substantially influenced by St. Augustine of Hippo and that Being and Time would not have been possible without the influence of Augustine's thought. Augustine's Confessions was particularly influential in shaping Heidegger's thought.
Augustine viewed time as relative and subjective, and that being and time were bound up together. Heidegger adopted similar views, e.g. that time was the horizon of Being: ' ...time temporalizes itself only as long as there are human beings.'

Aristotle and the Greeks

Heidegger was influenced at an early age by Aristotle, mediated through Catholic theologymedieval philosophy and Franz Brentano. Aristotle's ethical, logical, and metaphysical works were crucial to the development of his thought in the crucial period of the 1920s. Although he later worked less on Aristotle, Heidegger recommended postponing reading Nietzsche, and to "first study Aristotle for ten to fifteen years."[67] In reading Aristotle, Heidegger increasingly contested the traditional Latin translation and scholastic interpretation of his thought. Particularly important (not least for its influence upon others, both in their interpretation of Aristotle and in rehabilitating a neo-Aristotelian "practical philosophy") was his radical reinterpretation of Book Six of Aristotle's Nicomachean Ethics and several books of the Metaphysics. Both informed the argument of Being and Time. Heidegger's thought is original in being an authentic retrieval of the past, a repetition of the possibilities handed down by the tradition.
The idea of asking about being may be traced back via Aristotle to Parmenides. Heidegger claimed to have revived the question of being, the question having been largely forgotten by the metaphysical tradition extending from Plato to Descartes, a forgetfulness extending to the Age of Enlightenment and then to modern science and technology. In pursuit of the retrieval of this question, Heidegger spent considerable time reflecting on ancient Greek thought, in particular on Plato, ParmenidesHeraclitus, and Anaximander, as well as on the tragic playwright Sophocles.

Dilthey

Heidegger's very early project of developing a "hermeneutics of factical life" and his hermeneutical transformation of phenomenology was influenced in part by his reading of the works of Wilhelm Dilthey.
Of the influence of Dilthey, Hans-Georg Gadamer writes the following: "As far as Dilthey is concerned, we all know today what I have known for a long time: namely that it is a mistake to conclude on the basis of the citation in Being and Time that Dilthey was especially influential in the development of Heidegger's thinking in the mid-1920s. This dating of the influence is much too late." He adds that by the fall of 1923 it was plain that Heidegger felt "the clear superiority of Count Yorck over the famous scholar, Dilthey." Gadamer nevertheless makes clear that Dilthey's influence was important in helping the youthful Heidegger "in distancing himself from the systematic ideal of Neo-Kantianism, as Heidegger acknowledges in Being and Time." Based on Heidegger's earliest lecture courses, in which Heidegger already engages Dilthey's thought prior to the period Gadamer mentions as "too late", scholars as diverse as Theodore Kisiel and David Farrell Krell have argued for the importance of Diltheyan concepts and strategies in the formation of Heidegger's thought.
Even though Gadamer's interpretation of Heidegger has been questioned, there is little doubt that Heidegger seized upon Dilthey's concept of hermeneutics. Heidegger's novel ideas about ontology required a gestalt formation, not merely a series of logical arguments, in order to demonstrate his fundamentally new paradigm of thinking, and the hermeneutic circle offered a new and powerful tool for the articulation and realization of these ideas.

Husserl

There is disagreement over the degree of influence that Husserl had on Heidegger's philosophical development, just as there is disagreement about the degree to which Heidegger's philosophy is grounded in phenomenology. These disagreements centre upon how much of Husserlian phenomenology is contested by Heidegger, and how much this phenomenology in fact informs Heidegger's own understanding.
On the relation between the two figures, Gadamer wrote: "When asked about phenomenology, Husserl was quite right to answer as he used to in the period directly after World War I: 'Phenomenology, that is me and Heidegger'." Nevertheless, Gadamer noted that Heidegger was no patient collaborator with Husserl, and that Heidegger's "rash ascent to the top, the incomparable fascination he aroused, and his stormy temperament surely must have made Husserl, the patient one, as suspicious of Heidegger as he always had been of Max Scheler's volcanic fire."
Robert J. Dostal understood the importance of Husserl to be profound:
Heidegger himself, who is supposed to have broken with Husserl, bases his hermeneutics on an account of time that not only parallels Husserl's account in many ways but seems to have been arrived at through the same phenomenological method as was used by Husserl.... The differences between Husserl and Heidegger are significant, but if we do not see how much it is the case that Husserlian phenomenology provides the framework for Heidegger's approach, we will not be able to appreciate the exact nature of Heidegger's project in Being and Time or why he left it unfinished.
Daniel O. Dahlstrom saw Heidegger's presentation of his work as a departure from Husserl as unfairly misrepresenting Husserl's own work. Dahlstrom concluded his consideration of the relation between Heidegger and Husserl as follows:
Heidegger's silence about the stark similarities between his account of temporality and Husserl's investigation of internal time-consciousness contributes to a misrepresentation of Husserl's account of intentionality. Contrary to the criticisms Heidegger advances in his lectures, intentionality (and, by implication, the meaning of 'to be') in the final analysis is not construed by Husserl as sheer presence (be it the presence of a fact or object, act or event). Yet for all its "dangerous closeness" to what Heidegger understands by temporality, Husserl's account of internal time-consciousness does differ fundamentally. In Husserl's account the structure of protentions is accorded neither the finitude nor the primacy that Heidegger claims are central to the original future of ecstatic-horizonal temporality.

Kierkegaard

Heideggerians regarded Søren Kierkegaard as, by far, the greatest philosophical contributor to Heidegger's own existentialist concepts.Heidegger's concepts of anxiety (Angst) and mortality draw on Kierkegaard and are indebted to the way in which the latter lays out the importance of our subjective relation to truth, our existence in the face of death, the temporality of existence, and the importance of passionate affirmation of one's individual being-in-the-world.

Hölderlin and Nietzsche

Friedrich Hölderlin and Friedrich Nietzsche were both important influences on Heidegger, and many of his lecture courses were devoted to one or the other, especially in the 1930s and 1940s. The lectures on Nietzsche focused on fragments posthumously published under the title The Will to Power, rather than on Nietzsche's published works. Heidegger read The Will to Power as the culminating expression of Western metaphysics, and the lectures are a kind of dialogue between the two thinkers.
The fundamental differences between the philosophical delineations of Heidegger and Adorno can be found in their contrasting views of Hölderlin's poetical works and to a lesser extent in their divergent views on German romanticism in general. For Heidegger, Hölderlin expressed the intuitive necessity of metaphysical concepts as a guide for ethical paradigms, devoid of reflection. Adorno, on the other hand, pointed to the dialectic reflection of historical situations, the sociological interpretations of future outcomes, and therefore opposed the liberating principles of intuitive concepts because they negatively surpassed the perception of societal realities. Nevertheless, it was Heidegger's rationalization and later work on Hölderlin's poems as well as on Parmenides ("For to be aware and to be are the same". B 3) and his consistent understanding of Nietzsche's thought that formed the foundation of postmodern existentialism.
This is also the case for the lecture courses devoted to the poetry of Friedrich Hölderlin, which became an increasingly central focus of Heidegger's work and thought. Heidegger grants to Hölderlin a singular place within the history of being and the history of Germany, as a herald whose thought is yet to be "heard" in Germany or the West. Many of Heidegger's works from the 1930s onwards include meditations on lines from Hölderlin's poetry, and several of the lecture courses are devoted to the reading of a single poem (see, for example, Hölderlin's Hymn "The Ister").

Heidegger and Eastern thought

Some writers on Heidegger's work see possibilities within it for dialogue with traditions of thought outside of Western philosophy, particularly East Asian thinking. Despite perceived differences between Eastern and Western philosophy, some of Heidegger's later work, particularly "A Dialogue on Language between a Japanese and an Inquirer", does show an interest in initiating such a dialogue.Heidegger himself had contact with a number of leading Japanese intellectuals, including members of the Kyoto School, notably Hajime Tanabe and Kuki Shūzō. It has also been claimed that a number of elements within Heidegger's thought bear a close parallel to Eastern philosophical ideas, particularly Zen Buddhism and Taoism. Reinhard May records Chang Chung-Yuan saying that "Heidegger is the only Western Philosopher who not only intellectually understands but has intuitively grasped Taoist thought." May sees great influence of Taoism and Japanese scholars in Heidegger's work, although this influence is not acknowledged by the author. He asserts: "The investigation concludes that Heidegger’s work was significantly influenced by East Asian sources. It can be shown, moreover, that in particular instances Heidegger even appropriated wholesale and almost verbatim major ideas from the German translations of Daoist and Zen Buddhist classics. This clandestine textual appropriation of non-Western spirituality, the extent of which has gone undiscovered for so long, seems quite unparalleled, with far-reaching implications for our future interpretation of Heidegger’s work."

Islam

Research has been done on the relationships between Western philosophy and the history of ideas in Islam. Some of these scholars interested in Arabic philosophical medieval sources are influenced by Heidegger's work, including numerous recent academic studies by the Lebanese philosopher and architectural theorist Nader El-Bizri, who besides his focus on the critique of the history of metaphysics (as an 'Arab Heideggerian') Nader El-Bizri also moves towards rethinking the notion of dwelling in the epoch of the modern unfolding of the essence of technology and Gestell, and realizing what can be described as a "confluence of Western and Eastern thought" as well. It is claimed the works of counter-enlightenment philosophers such as Heidegger, along with Friedrich Nietzsche and Joseph de Maistre, influenced Iran's Shia Islamists, notably Ali Shariati, and the thinkers Ahmad Fardid and Reza Davari Ardakani. This included the construction of the ideological foundations of the Iranian Revolution and modern political Islam in its connections with theology.

Heidegger and Architecture

Heidegger's thought influenced some architectural theorists in a direct manner, or through an impact via his reflections on 'dwelling', the 'origin of the work of art', 'the essence of technology', and the unfolding of a broad interest in phenomenology within the contemporary circles of architectural theory. This is for instance evident in the works and profiles of theorists such as Christian Norberg-SchulzDalibor VeselyNader El-BizriKarsten HarriesNeil Leach, Adam Sharr, etc., within what is known as Architectural phenomenology and in contemporary architectural theory in general.

The Heidegger controversy


The rectorate


The University of Freiburg, where Heidegger was Rector from April 21, 1933, to April 23, 1934
Adolf Hitler was sworn in as Chancellor of Germany on January 30, 1933. Heidegger was electedrector of the University of Freiburg on April 21, 1933, and assumed the position the following day. On May 1, he joined the Nazi Party.
Heidegger delivered his inaugural address, the Rektoratsrede, on "Die Selbstbehauptung der Deutschen Universität" ("The Self-assertion of the German University") on 27 May.
His tenure as rector was fraught with difficulties from the outset. Some National Socialist education officials viewed him as a rival, while others saw his efforts as comical. Some of Heidegger's fellow National Socialists also ridiculed his philosophical writings as gibberish. He finally offered his resignation on 23 April 1934, and it was accepted on 27 April. Heidegger remained a member of both the academic faculty and of the Nazi Party until the end of the war.
Philosophical historian Hans Sluga wrote:
Though as rector he prevented students from displaying an anti-Semitic poster at the entrance to the university and from holding a book burning, he kept in close contact with the Nazi student leaders and clearly signaled to them his sympathy with their activism.
In 1945, Heidegger wrote of his term as rector, giving the writing to his son Hermann; it was published in 1983:
The rectorate was an attempt to see something in the movement that had come to power, beyond all its failings and crudeness, that was much more far-reaching and that could perhaps one day bring a concentration on the Germans' Western historical essence. It will in no way be denied that at the time I believed in such possibilities and for that reason renounced the actual vocation of thinking in favor of being effective in an official capacity. In no way will what was caused by my own inadequacy in office be played down. But these points of view do not capture what is essential and what moved me to accept the rectorate.

Treatment of Husserl

Beginning in 1917, German-Jewish philosopher Edmund Husserl championed Heidegger's work, and helped him secure the retiring Husserl's chair in Philosophy at the University of Freiburg.
On 6 April 1933, the Reichskommissar of Baden Province, Robert Wagner, suspended all Jewish government employees, including present and retired faculty at the University of Freiburg. Heidegger's predecessor as Rector formally notified Husserl of his "enforced leave of absence" on 14 April 1933.
Heidegger became Rector of the University of Freiburg on 22 April 1933. The following week the national Reich law of 28 April 1933, replaced Reichskommissar Wagner's decree. The Reich law required the firing of Jewish professors from German universities, including those, such as Husserl, who had converted to Christianity. The termination of the retired professor Husserl's academic privileges thus did not involve any specific action on Heidegger's part.
Heidegger had by then broken off contact with Husserl, other than through intermediaries. Heidegger later claimed that his relationship with Husserl had already become strained after Husserl publicly "settled accounts" with Heidegger and Max Scheler in the early 1930s.
Heidegger did not attend his former mentor's cremation in 1938. In 1941, under pressure from publisher Max Niemeyer, Heidegger agreed to remove the dedication to Husserl from Being and Time (restored in post-war editions).
Heidegger's behavior towards Husserl has evoked controversy. Arendt initially suggested that Heidegger's behavior precipitated Husserl's death. She called Heidegger a "potential murderer." However, she later recanted her accusation.
In 1939, only a year after Husserl's death, Heidegger wrote in his Black Notebooks: "The more original and inceptive the coming decisions and questions become, the more inaccessible will they remain to this [Jewish] 'race'. (Thus, Husserl’s step toward phenomenological observation, and his rejection of psychological explanations and historiological reckoning of opinions, are of enduring importance—yet it never reaches into the domains of essential decisions", seeming to imply that Husserl's philosophy was limited purely because he was Jewish.

Post-rectorate period

After the failure of Heidegger's rectorship, he withdrew from most political activity, without canceling his membership in the NSDAP (Nazi Party). References to National Socialism continued to appear in his work.
The most controversial such reference occurred during a 1935 lecture which was published in 1953 as part of the book Introduction to Metaphysics. In the published version, Heidegger refers to the "inner truth and greatness" of the National Socialist movement (die innere Wahrheit und Größe dieser Bewegung), but he then adds a qualifying statement in parentheses: "namely, the confrontation of planetary technology and modern humanity" (nämlich die Begegnung der planetarisch bestimmten Technik und des neuzeitlichen Menschen). However, it subsequently transpired that this qualification had not been made during the original lecture, although Heidegger claimed that it had been. This has led scholars to argue that Heidegger still supported the Nazi party in 1935 but that he did not want to admit this after the war, and so he attempted to silently correct his earlier statement.
In private notes written in 1939, Heidegger took a strongly critical view of Hitler's ideology;however, in public lectures, he seems to have continued to make ambiguous comments which, if they expressed criticism of the regime, did so only in the context of praising its ideals. For instance, in a 1942 lecture, published posthumously, Heidegger said of recent German classics scholarship:
In the majority of "research results," the Greeks appear as pure National Socialists. This overenthusiasm on the part of academics seems not even to notice that with such "results" it does National Socialism and its historical uniqueness no service at all, not that it needs this anyhow.
An important witness to Heidegger's continued allegiance to National Socialism during the post-rectorship period is his former student Karl Löwith, who met Heidegger in 1936 while Heidegger was visiting Rome. In an account set down in 1940 (though not intended for publication), Löwith recalled that Heidegger wore a swastika pin to their meeting, though Heidegger knew that Löwith was Jewish. Löwith also recalled that Heidegger "left no doubt about his faith in Hitler", and stated that his support for National Socialism was in agreement with the essence of his philosophy.

Post-war period

After the end of World War II, Heidegger was summoned to appear at a denazification hearing. Heidegger's former lover Arendt spoke on his behalf at this hearing, while Jaspers spoke against him. The result of the hearings was that Heidegger was forbidden to teach between 1945 and 1951. One consequence of this teaching ban was that Heidegger began to engage far more in the French philosophical scene.
In his postwar thinking, Heidegger distanced himself from Nazism, but his critical comments about Nazism seem "scandalous" to some since they tend to equate the Nazi war atrocities with other inhumane practices related to rationalisation and industrialisation, including the treatment of animals by factory farming. For instance in a lecture delivered at Bremen in 1949, Heidegger said: "Agriculture is now a motorized food industry, the same thing in its essence as the production of corpses in the gas chambers and the extermination camps, the same thing as blockades and the reduction of countries to famine, the same thing as the manufacture of hydrogen bombs."
In 1967 Heidegger met with the Jewish poet Paul Celan, a concentration camp survivor. Celan visited Heidegger at his country retreat and wrote an enigmatic poem about the meeting, which some interpret as Celan's wish for Heidegger to apologize for his behavior during the Nazi era.

Der Spiegel interview

On 23 September 1966, Heidegger was interviewed by Rudolf Augstein and Georg Wolff for Der Spiegel magazine, in which he agreed to discuss his political past provided that the interview be published posthumously. (It was published five days after his death, on 31 May 1976.) In the interview, Heidegger defended his entanglement with National Socialism in two ways: first, he argued that there was no alternative, saying that he was trying to save the university (and science in general) from being politicized and thus had to compromise with the Nazi administration. Second, he admitted that he saw an "awakening" (Aufbruch) which might help to find a "new national and social approach," but said that he changed his mind about this in 1934, largely prompted by the violence of the Night of the Long Knives.
In his interview Heidegger defended as double-speak his 1935 lecture describing the "inner truth and greatness of this movement." He affirmed that Nazi informants who observed his lectures would understand that by "movement" he meant National Socialism. However, Heidegger asserted that his dedicated students would know this statement was no eulogy for the NSDAP. Rather, he meant it as he expressed it in the parenthetical clarification later added to Introduction to Metaphysics (1953), namely, "the confrontation of planetary technology and modern humanity."
The Löwith account from 1936 has been cited to contradict the account given in the Der Spiegel interview in two ways: that he did not make any decisive break with National Socialism in 1934, and that Heidegger was willing to entertain more profound relations between his philosophy and political involvement. The Der Spiegel interviewers did not bring up Heidegger's 1949 quotation comparing the industrialization of agriculture to the extermination camps. In fact, the interviewers were not in possession of much of the evidence now known for Heidegger's Nazi sympathies.

Influence and reception in France

Heidegger was one of the most influential philosophers of the 20th century, and his ideas have penetrated into many areas, but in France there is a very long and particular history of reading and interpreting his work which in itself resulted in deepening the impact of his thought in Continental Philosophy. His influence is clear on Jean BeaufretFrançois FédierDominique JanicaudJean-Luc MarionJean-François Courtine, etc. -- one cannot even read Derrida or Levinas without taking into account their critiques of Heidegger that run deep at the basis of their thinking.

Existentialism and pre-war influence

Heidegger's influence on French philosophy began in the 1930s, when Being and Time, "What is Metaphysics?" and other Heideggerian texts were read by Jean-Paul Sartre and other existentialists, as well as by thinkers such as Alexandre KojèveGeorges Bataille andEmmanuel Levinas. Because Heidegger's discussion of ontology (the study of being) is rooted in an analysis of the mode of existence of individual human beings (Da-sein, or there-being), his work has often been associated with existentialism. The influence of Heidegger on Sartre's Being and Nothingness is marked, but Heidegger felt that Sartre had misread his work, as he argued in later texts such as the "Letter on Humanism'." In that text, intended for a French audience, Heidegger explained this misreading in the following terms:
Sartre's key proposition about the priority of existentia over essentia [that is, Sartre's statement that "existence precedes essence"] does, however, justify using the name "existentialism" as an appropriate title for a philosophy of this sort. But the basic tenet of "existentialism" has nothing at all in common with the statement from Being and Time [that "the 'essence' of Dasein lies in its existence"]—apart from the fact that in Being and Time no statement about the relation of essentia andexistentia can yet be expressed, since there it is still a question of preparing something precursory.
"Letter on Humanism'" is often seen as a direct response to Sartre's 1945 lecture "Existentialism is a Humanism." Aside from merely disputing readings of his own work, however, in "Letter on Humanism,'" Heidegger asserts that "Every humanism is either grounded in a metaphysics or is itself made to be the ground of one." Heidegger's largest issue with Sartre's existential humanism is that, while it does make a humanistic 'move' in privileging existence over essence, "the reversal of a metaphysical statement remains a metaphysical statement." From this point onward in his thought, Heidegger attempted to think beyond metaphysics to a place where the articulation of the fundamental questions of ontology were fundamentally possible: only from this point can we restore (that is, re-give [redonner]) any possible meaning to the word "humanism".

Post-war forays into France

After the war, Heidegger was banned from university teaching for a period on account of his activities as Rector of Freiburg University. He developed a number of contacts in France, where his work continued to be taught, and a number of French students visited him atTodtnauberg (see, for example, Jean-François Lyotard's brief account in Heidegger and "the Jews", which discusses a Franco-German conference held in Freiburg in 1947, one step toward bringing together French and German students). Heidegger subsequently made several visits to France, and made efforts to keep abreast of developments in French philosophy by way of correspondence with Jean Beaufret, an early French translator of Heidegger, and with Lucien Braun.

Derrida and deconstruction

Deconstruction came to Heidegger's attention in 1967 by way of Lucien Braun's recommendation of Jacques Derrida's work (Hans-Georg Gadamer was present at an initial discussion and indicated to Heidegger that Derrida's work came to his attention by way of an assistant). Heidegger expressed interest in meeting Derrida personally after the latter sent him some of his work. There was discussion of a meeting in 1972, but this failed to take place. Heidegger's interest in Derrida is said by Braun to have been considerable (as is evident in two letters, of September 29, 1967 and May 16, 1972, from Heidegger to Braun). Braun also brought to Heidegger's attention the work of Michel Foucault. Foucault's relation to Heidegger is a matter of considerable difficulty; Foucault acknowledged Heidegger as a philosopher whom he read but never wrote about. (For more on this see Penser à Strasbourg, Jacques Derrida, et al., which includes reproductions of both letters and an account by Braun, "À mi-chemin entre Heidegger et Derrida").
Derrida attempted to displace the understanding of Heidegger's work that had been prevalent in France from the period of the ban against Heidegger teaching in German universities, which amounted to an almost wholesale rejection of the influence of Jean-Paul Sartre and existentialist terms. In Derrida's view, deconstruction is a tradition inherited via Heidegger (the French term "déconstruction" is a term coined to translate Heidegger's use of the words "Destruktion"—literally "destruction"—and "Abbau"—more literally "de-building"). According to Derrida, Sartre's interpretation of Dasein and other key Heideggerian concerns is overly psychologistic, anthropocentric, and misses the historicality central to Dasein in Being and Time.

The Farías debate

Derrida, Lacoue-Labarthe, and Jean-François Lyotard, among others, all engaged in debate and disagreement about the relation between Heidegger's philosophy and his Nazi politics. These debates included the question of whether it was possible to do without Heidegger's philosophy, a position which Derrida in particular rejected. Forums where these debates took place include the proceedings of the first conference dedicated to Derrida's work, published as "Les Fins de l'homme à partir du travail de Jacques Derrida: colloque de Cerisy, 23 juillet-2 août 1980", Derrida's "Feu la cendre/cio' che resta del fuoco", and the studies on Paul Celan by Lacoue-Labarthe and Derrida which shortly preceded the detailed studies of Heidegger's politics published in and after 1987.
When in 1987 Víctor Farías published his book Heidegger et le nazisme, this debate was taken up by many others, some of whom were inclined to disparage so-called "deconstructionists" for their association with Heidegger's philosophy. Derrida and others not only continued to defend the importance of reading Heidegger, but attacked Farías on the grounds of poor scholarship and for what they saw as the sensationalism of his approach. Not all scholars agreed with this negative assessment: Richard Rorty, for example, declared that "[Farías'] book includes more concrete information relevant to Heidegger's relations with the Nazis than anything else available, and it is an excellent antidote to the evasive apologetics that are still being published."

Bernard Stiegler

More recently, Heidegger's thought has considerably influenced the work of the French philosopher Bernard Stiegler. This is evident even from the title of Stiegler's multi-volume magnum opusLa technique et le temps (volume one translated into English as Technics and Time, 1: The Fault of Epimetheus). Stiegler offers an original reading of Heidegger, arguing that there can be no access to "originary temporality" other than via material, that is, technical, supports, and that Heidegger recognised this in the form of his account of world historicality, yet in the end suppressed that fact. Stiegler understands the existential analytic of Being and Time as an account of psychicindividuation, and his later "history of being" as an account of collective individuation. He understands many of the problems of Heidegger's philosophy and politics as the consequence of Heidegger's inability to integrate the two.

Giorgio Agamben

Heidegger has been very influential on the work of Italian philosopher Giorgio Agamben. Agamben attended seminars in France led by Heidegger in the late 1960s.

Criticism

Heidegger's influence upon 20th century continental philosophy is unquestioned and has produced a variety of critical responses.

Early criticisms

According to Husserl, Being and Time claimed to deal with ontology but only did so in the first few pages of the book. Having nothing further to contribute to an ontology independent of human existence, Heidegger changed the topic to Dasein. Whereas Heidegger argued that the question of human existence is central to the pursuit of the question of being, Husserl criticized this as reducing phenomenology to "philosophical anthropology" and offering an abstract and incorrect portrait of the human being.
The Neo-Kantian Ernst Cassirer and Heidegger engaged in an influential debate located in Davos in 1929, concerning the significance of Kantian notions of freedom and rationality. Whereas Cassirer defended the role of rationality in Kant, Heidegger argued for the priority of the imagination. Dilthey's student Georg Misch wrote the first extended critical appropriation of Heidegger in Lebensphilosophie und Phänomenologie. Eine Auseinandersetzung der Diltheyschen Richtung mit Heidegger und Husserl, Leipzig 1930 (3. ed. Stuttgart 1964).

Left-Hegelianism and critical theory

Hegel-influenced Marxist thinkers, especially György Lukács and the Frankfurt School, associated the style and content of Heidegger's thought with German irrationalism and criticized its political implications.
Initially members of the Frankfurt School were positively disposed to Heidegger, becoming more critical at the beginning of the 1930s. Heidegger's student Herbert Marcuse became associated with the Frankfurt School. Initially striving for a synthesis between Hegelian Marxism and Heidegger's phenomenology, Marcuse later rejected Heidegger's thought for its "false concreteness" and "revolutionary conservativism." Theodor Adorno wrote an extended critique of the ideological character of Heidegger's early and later use of language in the Jargon of Authenticity. Contemporary social theorists associated with the Frankfurt School have remained largely critical of Heidegger's works and influence. In particular, Jürgen Habermas admonishes the influence of Heidegger on recent French philosophy in his polemic against "postmodernism" in The Philosophical Discourse of Modernity (1985). However, recent work by philosopher and critical theorist Nikolas Kompridis tries to show that Heidegger's insights into world disclosure are badly misunderstood and mishandled by Habermas, and are of vital importance for critical theory, offering an important way of renewing that tradition.

Reception by analytic and Anglo-American philosophy

Criticism of Heidegger's philosophy has also come from analytic philosophy, beginning with logical positivism. In "The Elimination of Metaphysics Through Logical Analysis of Language" (1932), Rudolf Carnap accused Heidegger of offering an "illusory" ontology, criticizing him for committing the fallacy of reification and for wrongly dismissing the logical treatment of language which, according to Carnap, can only lead to writing "nonsensical pseudo-propositions."
The British logical positivist A. J. Ayer was strongly critical of Heidegger's philosophy. In Ayer's view, Heidegger proposed vast, overarching theories regarding existence, which are completely unverifiable through empirical demonstration and logical analysis. For Ayer, this sort of philosophy was a poisonous strain in modern thought. He considered Heidegger to be the worst example of such philosophy, which Ayer believed to be entirely useless.
Bertrand Russell commented, expressing the sentiments of many mid-20th-century analytic philosophers, that:
Highly eccentric in its terminology, his philosophy is extremely obscure. One cannot help suspecting that language is here running riot. An interesting point in his speculations is the insistence that nothingness is something positive. As with much else in Existentialism, this is a psychological observation made to pass for logic.
Roger Scruton stated that: "His major work Being and Time is formidably difficult—unless it is utter nonsense, in which case it is laughably easy. I am not sure how to judge it, and have read no commentator who even begins to make sense of it".
The analytic tradition values clarity of expression. Heidegger, however, has on occasion appeared to take an opposing view, stating for example:
those in the crossing must in the end know what is mistaken by all urging for intelligibility: that every thinking of being, all philosophy, can never be confirmed by "facts," i.e., by beings. Making itself intelligible is suicide for philosophy. Those who idolize "facts" never notice that their idols only shine in a borrowed light. They are also meant not to notice this; for thereupon they would have to be at a loss and therefore useless. But idolizers and idols are used wherever gods are in flight and so announce their nearness.
Apart from the charge of obscurantism, other analytic philosophers considered the actual content of Heidegger's work to be either faulty and meaningless, vapid or uninteresting. However, not all analytic philosophers have been as hostile. Gilbert Ryle wrote a critical yet positive review of Being and TimeLudwig Wittgenstein made a remark recorded by Friedrich Waismann: "To be sure, I can imagine what Heidegger means by being and anxiety" which has been construed by some commentators as sympathetic to Heidegger's philosophical approach. These positive and negative analytic evaluations have been collected in Michael Murray (ed.), Heidegger and Modern Philosophy: Critical Essays (Yale University Press, 1978). Heidegger's reputation within English-language philosophy has slightly improved in philosophical terms in some part through the efforts of Hubert DreyfusRichard Rorty, and a recent generation of analytically oriented phenomenology scholars. Pragmatist Rorty claimed that Heidegger's approach to philosophy in the first half of his career has much in common with that of the latter-day Ludwig Wittgenstein. Nevertheless, Rorty asserted that what Heidegger had constructed in his writings was a myth of being rather than an account of it.
The Internet Encyclopedia of Philosophy states that Heidegger's writing is "notoriously difficult", possibly because his thinking was "original" and clearly on obscure and innovative topics.

Contemporary European reception

Even though Heidegger is considered by many observers to be the most influential philosopher of the 20th century in continental philosophy, aspects of his work have been criticised by those who nevertheless acknowledge this influence, such as Hans-Georg Gadamer and Jacques Derrida. Some questions raised about Heidegger's philosophy include the priority of ontology, the status of animals, the nature of the religious, Heidegger's supposed neglect of ethics (Levinas), the body (Maurice Merleau-Ponty), sexual difference (Luce Irigaray), or space (Peter Sloterdijk).
Levinas was deeply influenced by Heidegger, and yet became one of his fiercest critics, contrasting the infinity of the good beyond being with the immanence and totality of ontology. Levinas also condemned Heidegger's involvement with National Socialism, stating: "One can forgive many Germans, but there are some Germans it is difficult to forgive. It is difficult to forgive Heidegger."
Heidegger's defenders, notably Arendt, see his support for Nazism as arguably a personal " 'error' " (a word which Arendt placed in quotation marks when referring to Heidegger's Nazi-era politics). Defenders think this error was irrelevant to Heidegger's philosophy. Critics such as Levinas, Karl Löwith, and Theodor Adorno claim that Heidegger's support for National Socialism revealed flaws inherent in his though