==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?