... other words, whether it is possible to know anything for certain. Descartes was not the first person to employ scepticism. Descartes hopes to come to one unquestionable truth on which he can build his philosophy. The truth that he eventually comes to is often called the "cogito argument". Through this argument, he decides that he is a "thing that thinks." In doing so, he reasons that we can only be certain of our minds and cannot be certain of our bodies' existence. This essay focuses primarily on the Dream argument. In the Dream argument, Descartes argues that he often dreams of things that seem real to him while he is asleep. In one dream, he sits by a fire in his room, and it seems he can feel the warmth of the fire, just as he feels it in his waking life, even though there is no fire. The fact ...

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