The Meditations on First Philosophy

"Meditations on First Philosophy," written by René Descartes in the 17th century, explores the nature of existence and knowledge. Descartes questions everything he previously believed, famously concluding, "I think, therefore I am," which asserts that the act of doubting or thinking confirms one's existence. He seeks certainty in knowledge and explores the existence of God and the distinction between mind and body. The work lays the groundwork for modern philosophy and emphasizes rational thought as a foundation for understanding reality and personal existence, addressing skepticism and the nature of truth.