The existence of God has been a question since the idea of God was conceived. Descartes tries to prove Gods existence, to disprove his Evil demon theory, and to show that there is without a doubt something external to ones own existence. He is looking for a definite certainty, a foundation for which he can base all of his beliefs and know for a fact that they are true. Descartes overall project is to find a definite certainty on which he can base all his knowledge and beliefs. A foundation that he will be able to prove without a doubt. To find a definite certainty he uses a methodical doubt, this