More Descartes

Rene Descartes, believed that the origin of knowledge comes from within the mind, a single indisputable fact to build on that can be gained through individual reflection. His Discourse on Method contains some of his most important philosophical theories. Especially mathematical, in which he found his passion lied. He intended to extend the mathematical method to all areas of human knowledge. He seemed to discarded the authoritarian and aristotelian systems of the scholastic philosophers, which was, according to the Aristotelian tradition, the mind proper—what is exclusively "inside the head." This is limited to reason and understanding. Senses, imagination, will, etc. make reference to things outside the mind. (not purely mental). Rather, they link the believer and thinker to the "outside" world. Thus, sensory experience gives us direct and immediate knowledge of objects in the world. Okay, carying on... Descaertes discarded that and began with universal doubt. Only one thing cannot be doubted: doubt itself. Therefore, the doubter must exist. Man is thus a thinking thing which you know evolved from the Descartes slogan "Cogito Ergo Sum" ---> I am, therefore I exist" You can doubt everything you want, but you cannot doubt doubting because you are thinking. Thus thinking exists! You exist!