I remember that we read this in my political philosophy class in college, and though I remember none of the particulars, I remember it made a big impact on me at the time and I briefly considered studying philosophy.

More books by this author

Critique of Pure Reason (Penguin Classics)

Critique of Pure Reason (The Cambridge Edition of the Works of Immanuel Kant)

Critique of Pure Reason

Kant: Groundwork of the Metaphysics of Morals (Cambridge Texts in the History of Philosophy)