Immanuel Kant is among the most pivotal thinkers in the history of philosophy. His transcendental idealism claims to overcome the skepticism of David Hume, resolve the impasse between empiricism and rationalism, and establish the reality of human freedom and moral agency. A thorough understanding of Kant is indispensable to any philosopher today. The significance of Kant's thought is matched by its complexity. His revolutionary ideas are systematically interconnected and he presents them using a forbidding technical vocabulary. A careful investigation of the key concepts that structure Kant's