Meditations on First Philosophy

Meditations on First Philosophy, authored by Rene Descartes and published in 1641, is a foundational work in modern Western philosophy. In this series of meditations, Descartes engages in a process of radical doubt, systematically questioning the validity of his beliefs to establish a secure foundation for knowledge. He ultimately arrives at the famous conclusion, Cogito, ergo sum (I think, therefore I am), affirming the existence of the thinking self as the first indubitable truth.