Descartes' Epistemology - Essay Example

Descartes comparison of himself to a madman is actually a figure of speech when he doubted his perception of the world whether it is real or not

• Inferring to Descartes's philosophy, it is still us who is the best judge to say which experience is valid. It is because we have “innate ideas that yield an intellectual knowledge of the essences of the things with which we are acquainted in our sensible experience of the world” 
• For Descartes, reason comes from the mere exercise of thinking and is already a validation that one exists. Even the process of doubting one’s existence, in Descartes's perspective, is already proof that one exists due to the sheer exercise of thinking.