Rene Descartes

René Descartes was a French philosopher and mathematician known for his contributions to various fields. In philosophy, he emphasized doubt and reason, famously stating "I think, therefore I am." In geometrical optics, he studied how light refracts and reflects, laying groundwork for modern optics. His philosophy of religion questioned the existence of God and the nature of faith. Descartes explored modality, considering what is possible versus actual. He also examined free will and determinism, debating how free choice coexists with a deterministic universe. His work profoundly influenced modern science, philosophy, and mathematics.