"Meditations on First Philosophy" is a philosophical treatise that introduces the concept of radical doubt as a foundational element of knowledge. The book is known for the famous philosophical statement, "I think, therefore I am," which the author uses to establish the existence of the self as a necessary truth. The author also presents arguments for the existence of a benevolent God and the immortality of the soul, while examining the differences between the mind and the body, the nature of reality, and the limits of human understanding.

The 1238th greatest book of all time