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Explain how Descartes developed Anselm's argument that God's existence is necessary

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Explain how Descartes developed Anselm's argument that God's existence is necessary [25 marks] The ontological argument is concerned with the being or nature of God. Anselm's main argument that he put forth was that God's existence is necessary, he summarised it in four main points: God is the greatest possible being which can be conceived, God may exist in the mind alone or in reality as well, something which exists in reality and in the mind is greater than something that exists as an idea in the mind alone, and Therefore, God must exist in reality and in the mind.Anselms argument is a reply to the fool who says there is no God and this gives Anselm a starting point. ...read more.


Anything which has to exist and cannot fail to exist is said by philosophers exist by necessity. Most things that exist depend on something else for their existence, for example, your home only exists in reality because some built it, you cannot say your home had to exist, because it was up to the builder to decide whether to build it. This type of existence is identified as contingent existence. Contingent existence refers to something which depends on referring to something else to fully explain why it exists. In reference to the question, Descarte developed Anselm's argument, that God's existence is necessary. Descarte claim that God has placed in every person the idea of God. ...read more.


Part of God's essence is therefore existence. Descarte argues that God existing is as fundamental to the nature of God as the interior angles of the triangle. For Descarte, the essence of God is that God exists and existence is a predicate of God. As Anselms put forth the definition of predicate, in philosophical terms, to indicate an intrinsic property or quality of something, therefore the predicate of God is His existence. Descarte went on to further develop Anselm's argument that God's existence is necessary by using three simultaneous arguments, firstly, God is a supremely perfect being, secondly, a property perfect is existence, therefore God existences. Existence, so far as Descarte is concerned, is a perfection of God in the same way as a mountain and a valley going together. You cannot talk about God unless God exists because God is perfect and part of perfection is existence. ...read more.

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