Thursday, February 25, 2016

Existence of God Proved ?

Among the different arguments for the existence of God , three stand out in importance in the earlier history of philosophy , each of which is still encountered in many variations.
Three arguments are put forward for this. 1. The Teleological Argument, 2. The Cosmological Argument, and 3. The Ontological Argument.
1.The teleological or physico-theological argument, also known as the argument from design, or intelligent design argument is an argument for the existence of God or, more generally, for an intelligent creator "based on perceived evidence of deliberate design in the natural or physical world". It is historically closely associated with the concept of Natural Theology.
The earliest recorded versions of this argument are associated with Socrates in ancient Greece, although it has been argued that he was taking up an older argument. Plato, his student, and Aristotle, Plato's student, developed complex approaches to the proposal that the cosmos has an intelligent cause, but it was the Stoics who, under their influence, "developed the battery of creationist arguments broadly known under the label "The Argument from Design"".
Socratic philosophy influenced the development of the Abrahamic religions in many ways, and the teleological argument has a long association with them. In the Middle Ages, Islamic theologians such as Al Ghazali used the argument, although it was rejected as unnecessary by Quranic literalists, and as unconvincing by many Islamic philosophers. Later, the teleological argument was accepted by Saint Thomas Aquinas and included as the fifth of his "Five Ways" of proving the existence of God. In early modern England clergymen such as William Turner and John Ray were well-known proponents. In the early 18th century,William Derham published his Physico-Theology, which gave his "demonstration of the being and attributes of God from his works of creation". Later, William Paley, in his 1802 work on natural theology, published a prominent presentation of the design argument with his version of the watchmaker analogy and the first use of the phrase "argument from design".

From the beginning, there have been numerous criticisms of the different versions of the teleological argument, and responses to its challenge to the claims against non-teleological natural science. Especially important were the general logical arguments made by David Hume in his Dialogues Concerning Natural Religion, published 1779, and the explanation of biological complexity given in Charles Darwin's Origin of Species, published in 1859.Since the 1960s, Paley's arguments, including the words "intelligent design", have been influential in the development of a creation science movement, especially the form known as the intelligent design movement, which not only uses the teleological argument to argue against the modern Darwinian understanding of evolution, but also makes the philosophical claim that it can provide a basis for scientific proof of the divine origin of biological species.
Also starting already in classical Greece, two approaches to the teleological argument developed, distinguished by their understanding of whether the natural order was literally created or not. The non-creationist approach starts most clearly with Aristotle, although many thinkers, such as the Neoplatonists, believed it was already intended by Plato. This approach is not creationist in a simple sense, because while it agrees that a cosmic intelligence is responsible for the natural order, it rejects the proposal that this requires a "creator" to physically make and maintain this order. The Neoplatonists did not find the teleological argument convincing, and in this they were followed by medieval philosophers such as Al-Farabi and Avicenna. Later, Averroes and Thomas Aquinas considered the argument acceptable, but not necessarily the best argument. In contrast to the approach of such philosophers and theologians, the intelligent design movement makes a creationist claim for an intelligence that intervenes in the natural order.  
2. In natural theology, a cosmological argument is an argument in which the existence of a unique being, generally identified with or referred to as God, is deduced or inferred as highly probable from facts or alleged facts concerning causation, change, motion, contingency, or finitude in respect of the universe as a whole or processes within it.It is traditionally known as an argument from universal causation, an argument from first cause, or thecausal argument. Whichever term is employed, there are three basic variants of the argument, each with subtle yet important distinctions: the arguments from in causa(causality), in esse (essentially), and in fieri (becoming).
The basic premise of all of these is the concept of causality and of a First Cause. The history of this argument goes back to Aristotle or earlier, was developed in Neoplatonismand early Christianity and later in medieval Islamic theology during the 9th to 12th centuries, and re-introduced to medieval Christian theology in the 13th century. The cosmological argument is closely related to the principle of sufficient reason as addressed by Gottfried Leibniz and Samuel Clarke, itself a modern exposition of the claim that "nothing comes from nothing" attributed to Parmenides.
Contemporary defenders of cosmological arguments include William Lane CraigRobert Koons Alexander Pruss, and William L. Rowe.

3. An ontological argument is a philosophical argument for the existence of God that usesontology. Many arguments fall under the category of the ontological, and they tend to involve arguments about the state of being or existing. More specifically, ontological arguments tend to start with an a priori theory about the organization of the universe. If that organizational structure is true, the argument will provide reasons why God must exist.
The first ontological argument in the Western Christian tradition  was proposed by Anselm of Canterbury in his 1078 work Proslogion. Anselm defined God as "that than which nothing greater can be conceived", and argued that this being must exist in the mind; even in the mind of the person who denies the existence of God. He suggested that, if the greatest possible being exists in the mind, it must also exist in reality. If it only exists in the mind, then an even greater being must be possible — one which exists both in the mind and in reality. Therefore, this greatest possible being must exist in reality. Seventeenth century French philosopher René Descartes deployed a similar argument. Descartes published several variations of his argument, each of which centred on the idea that God's existence is immediately inferable from a "clear and distinct" idea of a supremely perfect being. In the early eighteenth century, Gottfried Leibniz augmented Descartes' ideas in an attempt to prove that a "supremely perfect" being is a coherent concept. A more recent ontological argument came from Kurt Gödel, who proposed a formal argument for God's existence. Norman Malcolm revived the ontological argument in 1960 when he located a second, stronger ontological argument in Anselm's work; Alvin Plantinga challenged this argument and proposed an alternative, based on modal logic. Attempts have also been made to validate Anselm's proof using an automated theorem prover. Other arguments have been categorised as ontological, including those made by Islamic philosopher Mulla Sadra.
Since its proposal, few philosophical ideas have generated as much interest and discussion as the ontological argument. Nearly all of the great minds of Western philosophy have found the argument worthy of their attention and criticism. The general consensus is that the argument is erroneous. However, consensus as to the exact nature of the argument's error or errors has long proved elusive to the philosophical community. The first critic of the ontological argument was Anselm's contemporary, Gaunilo of Marmoutiers. He used the analogy of a perfect island, suggesting that the ontological argument could be used to prove the existence of anything. This was the first of many parodies, all of which attempted to show that the argument has absurd consequences. Later, Thomas Aquinas rejected the argument on the basis that humans cannot know God's nature. Also, David Hume offered an empirical objection, criticising its lack of evidential reasoning and rejecting the idea that anything can exist necessarily. Immanuel Kant's critique was based on what he saw as the false premise that existence is a predicate. He argued that "existing" adds nothing (including perfection) to the essence of a being, and thus a "supremely perfect" being can be conceived not to exist. Finally, philosophers including C. D. Broad dismissed the coherence of a maximally great being, proposing that some attributes of greatness are incompatible with others, rendering "maximally great being" incoherent.
The consensus among philosophers now is that the existence of God cannot be proved. This is not ofcourse, to say that he does not exist , but only that his existence is not something that can be rationally demonstrateds. 

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