Martin Heidegger's 1925--26 lectures on truth and time provided much ofthe basis for his momentous work, Being and Time. Not published until 1976 as volume21 of the Complete Works, three months before Heidegger's death, this work iscentral to Heidegger's overall project of reinterpreting Western thought in terms oftime and truth. The text shows the degree to which Aristotle underlies Heidegger'shermeneutical theory of meaning. It also contains Heidegger's first publishedcritique of Husserl and takes major steps toward establishing the temporal bases oflogic and truth. Thomas Sheehan's elegant and insightful translation offersEnglish-speaking readers access to this fundamental text for the firsttime.