Immanuel Kant never traveled more than ten miles from his hometown of Konigsberg, kept a daily routine so precise that neighbors set their clocks by his afternoon walk, and produced a body of work that demolished everything philosophy thought it knew about knowledge, morality, and the nature of reality itself.

This episode traces Kant from his quiet Prussian life through the Critique of Pure Reason and his revolutionary argument that the human mind does not passively receive reality but actively constructs it — an idea that rewired Western philosophy, science, and cognitive science forever.

• Kant's famously regimented life in Konigsberg and the routines that made him a local legend
• The Critique of Pure Reason and the "Copernican revolution" in philosophy
• The categorical imperative and Kant's attempt to ground moral ...