René Descartes
1596, France — 1650
2 books banned2 bans across 1 country
René Descartes, often called the father of modern philosophy, is best known for Meditations on First Philosophy and his principle "Cogito, ergo sum" ("I think, therefore I am"). His writings were placed on the Catholic Church's Index of Forbidden Books for challenging established doctrine through radical doubt and the primacy of reason. Descartes responded cautiously but persistently — continuing to publish while carefully navigating censorship. His work ultimately reshaped Western thought, demonstrating that intellectual progress often begins with questioning accepted truths.
