Rene Dascartes

• Rene Decartes was a french mathematician and philosopher.
• Descartes believed that the Ontological Argument was proof of God’s existence.
• As a mathematician Descartes was used to working with deductive arguments because all mathematical sums are deductive arguments.
• Like Anselm, Descartes believed it was possible to know God’s essence.
• Descartes’ Argument

  1. God is a supremely perfect being.
  2. Existence is a perfection (existence must be one of the predicates of a perfect being)
  3. Therefore God has existence as a perfection which means he exists.