Principles of Philosophers

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The Ontological Argument The Ontological Argument is an a priori argument, revolving around the existence of God. St Anselm’s Ontological Argument St Anselm, the then Archbishop of Canterbury devised the Ontological Argument in his ‘Proslogion.’ Anselm approached the existence of God with a ‘faith-seeking’ understanding, not motivated to convince or persuade people. Anselm uses the fool of the Psalms to begin the premise of his argument. The ‘fool’ of the Psalms declares that ‘in his heart, there is no God.’ Anselm criticizes the fool by arguing that the fool conceives the concept of God in his mind, but he paradoxically refuses its existence. 1st version of the Ontological Argument 1) God is something ‘than that which nothing greater can be conceived’ (God is the greatest being that we, as humans, can conceive in our minds.) 2) We all have an innate understanding and awareness of how God is, this is shown in our minds. 3) Something that exists in reality is intrinsically much more ‘greater’ than something existing solely in the mind. 4) Therefore, God exists both in reality and in the mind as this constitutes as being the ‘greatest being.’ Gaunilo of Marmourtier’s criticism of the Ontological Argument Gaunilo was a 12th century monk, contemporary to that of Anselm. He criticised Anselm’s Ontological Argument in his ‘In Behalf of the Fool’ (as a response to the use of the fool of the Psalm by Anselm) Gaunilo’s argument 1) An island which is perfect can be conceived 2) We can all comprehend and imagine a perfect island in our minds 3) The island must exist in reality, as in the mind, presupposing that it’s ‘perfect’ 4) However, the island does not exist. Gaunilo uses a ‘reductio ad absurdum’ argument to criticise Anselm’s argument. Remember, Gaunilo was also Christian and believed in God, he just believed that the argument did
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