Once Descartes has laid the foundation for what he does not know and his skepticism, he goes on to talk about what he does know. Descartes then goes on an intellectually based journey to establish a greater understanding of his “self”, because that is what is most reliable. He begins this journey with an argument called the ‘cogito’. Descartes realizes that since he is capable of doubting- which is what he has been doing- then he must exist. Although he doubts everything else about the existence of other things, Descartes knows he himself must exist. Descartes furthers his argument by saying it is absurd to say something does not exist if they can think. After establishing that he does in fact exist, Descartes is not sure what he is
