The text of Martin Heidegger's 1927--28 university lecture course onEmmanuel Kant's Critique of Pure Reason presents a close interpretive reading of thefirst two parts of this masterpiece of modern philosophy. Heidegger develops hisreading of Kant against the neo-Kantianism of his day, demonstrating thatobjectification of beings as beings is inseparable from knowledge a priori, thecentral problem of Kant's Critique.