I think therefore i am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 foundational basis for his philosophy and is often considered the beginning of modern Western philosophy.

Descartes' argument goes as follows:

1. If I doubt my own existence, I must exist in order to doubt.
2. If I am deceived about my existence, I must exist in order to be deceived.
3. If I think, then I must exist, because thinking requires an entity to perform the act of thinking.

Therefore, the mere fact that I am thinking proves that I exist. This is a form of rationalism, which holds that knowledge is derived from reason rather than experience. Descartes' "Cogito" is a fundamental principle from which he builds his entire philosophical system.