Immanuel Kant

Born in 1724 in Königsberg, Prussia, Immanuel Kant spent nearly his entire life in the same city, teaching and writing at the University of Königsberg. He lived a famously regular, disciplined life, but his work was anything but narrow: it reached across metaphysics, ethics, politics, religion, and aesthetics.

Kant is best known for a series of major works including Critique of Pure Reason, Critique of Practical Reason, and Critique of Judgment. In them, he argued that the mind plays an active role in shaping experience, and he developed a moral philosophy centered on duty, autonomy, and the idea that people should always be treated as ends in themselves, never merely as means.

He died in 1804, but his influence only grew after his lifetime. Kant remains a central figure for anyone interested in how reason works, what freedom means, and how human beings can live ethically in a shared world.