"I find in me faculties of thought altogether special and distinct from myself, such as the faculties of imagination and perceiving, without which I can indeed conceive myself clearly and distinctly as whole and entire, but I cannot conceive them without me, that is to say, without an intelligent substance to which they are attached. (Descartes 1985: 156-7) .
At the end of the first meditation, Descartes seeks one fact of which he can be certain and in "cogito ergo sum", he manages to reach the following conclusions: 1) Whatever thinks exists
2) I think.
Therefore 3) I exist.
In fact, this concept is stated at the beginning of his second meditation as follows,
"I have convinced myself there is absolutely nothing in the world, no sky, no earth, no minds, no bodies. Does it follow now that I don't exist either? No. If I persuaded myself of anything, then certainly I existed. But there is a deceiver of supreme power and cunning who deliberately and constantly deludes me. In that case, too, I undoubtedly exist, if he is deceiving me. And let him deceive me to his heart's content, he will never bring...