I think therefore i am的意思

"I think, therefore I am" ("Cogito, ergo sum" in Latin) is a famous philosophical proposition formulated by René Descartes, a French philosopher and mathematician. This statement is the basis for his method of radical doubt and is central to his philosophy. Descartes' main goal was to establish one thing that he could not doubt, even if he was deceived by an evil demon or his own senses.

The proposition is meant to be self-evident and undeniable. Descartes argues that even if he is deceived about everything else, the mere fact that he is doubting his existence and thinking about it proves that he exists as a thinking thing. In other words, the fact that he can think proves that he exists.

Descartes' "Cogito" is often considered the starting point of modern Western philosophy, as it marks a shift from the medieval approach to knowledge, which was largely based on authority and faith, to a more empirical and rational approach. By grounding knowledge in the certainty of one's own existence as a thinking being, Descartes laid the foundation for a new way of understanding the world and our place in it.