Who said ‘Cogito, ergo sum’ (I think, therefore I am)? 👤 By The Quiz Wire ✅ Fact Checked 📊 Difficulty Medium 📅 Last Updated 01 Dec 2025 A. Locke B. Kant C. René Descartes D. Spinoza Check Answer 💡 Explanation: René Descartes formulated this foundational philosophical proposition. 📚 Topics: Philosophy Religion and Philosophy 🎯 Exams: CSS GEN PMS