In the Meditations, Rene Descartes attempts to doubt everything that is possible to doubt. His uncertainty of things that existence ranges from God to himself. Then he goes on to start proving that things do exist by first proving that he exists. After he establishes himself he can go on to establish everything else in the world. Next he goes to prove that the mind is separate then the body. In order to do this he must first prove he has a mind, and then prove that bodily things exist. I do agree with Descartes that the mind is separate from the body. These are the arguments that I agree with Descartes.
In his six Meditations, only four contain his argument about corporeal things and establishing himself as a thinking thing. Meditations three and four discuss the existence of God and the matter of true and false. Concerning Meditation three, Descartes proves God's existence and that He is not a deceiver, thereby allowing us to be sure that we are not deceived when we perceive things clearly and distinctly. The rest of the Meditations deal with him proving himself as a thinking thing and proving that the mind is separate from the body.
In Descartes' first meditation, he goes on to prove that nothing exists. He establishes that knowledge is built upon a foundation; each piece of knowledge rests upon some other part of knowledge. Over the course of ones life, a person establishes one piece of knowledge and builds upon that. Descartes goes on to doubt every particular set of knowledge he has.
Descartes says that the most basic set of knowledge we have is our senses. He continues that the senses give us false information. For example, when ...