Immanuel Kant's Critique of Pure Reason is both one of the most rewarding of all philosophical works and one of the most difficult. Norman Kemp Smith's translation is valuable, not simply because he rendered Kant's language into readable English, but also because his own extensive understanding of the Critique made him acutely aware of the pitfalls of translation. In this volume, the text followed is that of the second edition of 1787, and a translation is also given of all first edition passages which in the second edition have been either altered or omitted. For this reissue of Norman Kemp Smith's classic 1929 edition, Howard Caygill has contributed a new Preface, setting this translation into the context both of Kemp Smith's own life and work, and of his influence on Kant scholarship.