Criticism of Descartes 1 I exist 2 I have an idea of a supremely perfect being i e a being having all perfections 3 As an imperfect being I would be unable to create such a concept 4 The concept must have come from God 5 To be a perfect being God must exist 6 God exists This reasoning seems as absurd to me as 1 I exist 2 I have an idea of an invisible self willed flying elephant acting better than myself and being more perfect than me 3 As an less perfect being I would be unable to creat such a concept 4 The concept must have come from the invisible self willed flying elephant 5 To be a better being than myself the invisible self willed elephant must exist 6 This elephant exists In other words why does the concept of something greater than human being have to come from this very thing