What are some of Ren Descartes' most famous quotes and how do they reflect his philosophical beliefs?

Ren Descartes' most famous quote is "Cogito, ergo sum" which means "I think, therefore I am." This reflects his belief in the importance of individual consciousness and self-awareness as the foundation of knowledge. Another famous quote is "I think, therefore I am" which emphasizes the role of reason and critical thinking in understanding the world. These quotes demonstrate Descartes' emphasis on skepticism, rationalism, and the importance of the mind in the pursuit of truth.