Saint Anselm's line of reasoning in his argument for the existence of God is clear and simple. He clearly sets forth the idea that if God is so great, than no greater being can be thought of or conceived. For one who already believes in God, this argument is meaningful and easy to accept, yet for the non-believer difficulties in acceptance can be overcome by St. Anselm's philosophical statements set forth in the Proslogion. Saint Anselm brings to light the belief that we are all created in God's image, yet we are so marked by sin that even though we are his image, we can never be as great as him. In relation to this St. Anselm points out that he does not even attempt to attain the greatness of God, and that humans can attain fulfillment through believing and understanding God's greatness. This leads to the ontological argument where St. Anselm professes what he believes and understands. He proves this to the non-believer in his references to "than-which-nothing-greater-can-be-thought" statements and how even a fool can mentally conceive even though he does not understand; yet the impossibility of "than-which-nothing-greater-cannot-be-thought" is reason for God's real existence. Additionally, St. Anselm provides "if that-than-which-a-greater-cannot-be-thought can be thought not to exist, that-than-which-a-greater-cannot-be-thought is not the same as that-than-which-a-greater-cannot-be-thought, which is absurd." Furthermore, St. Anselm returns to that-than-which-nothing-greater-can-be-thought. Here St. Anselm reminds us that understanding this statement alone does not necessarily mean that we have total knowledge of God. Instead it means that God is greater than any idea we have about him; this does not mean that the argument is false, only that it is always possible to comprehend something greater than we already can comprehend. Problems may arise with St. Anselm's giving posit...