All Our Knowledge Begins With The

This passage comes from the "Transcendental Methodology" section of the Critique of Pure Reason (1781), where Kant outlines the three faculties of cognition — sensibility, understanding, and reason — and their proper roles. For Kant, "reason" in this technical sense refers to the highest faculty that seeks to unify all knowledge under principles, while the "senses" provide raw material and the "understanding" organizes it into experience. The Critique of Pure Reason is considered one of the most important and difficult works in the history of Western philosophy.