Logic: The Question of Truth

Editor’s Afterword

Editor’s Afterword Martin Heidegger held his four-hour-per-week lecture course on logic in the Winter Semester of 1925–26 in Marburg am Lahn. The original plan (cf. §5) was changed as the course was worked out. In contrast to traditional logic, Heidegger poses a philosophizing logic that inquires into λόγος: a logic of truth. In the prologue he investigates the situation of present-day logic, using as an example the logic that comes closest to a philosophizing logic, Husserl’s Logical Investigations. Heidegger explains Husserl’s struggle against psychologism and sets forth the dimension in which that struggle unfolds. In part I, Heidegger goes back to Aristotle’s interpretation of truth. At the center of that stands the interpretation of Metaphysics Θ 10, which has presented interpreters with so many difficulties. Part II develops the question of truth within the horizon of the analysis of Dasein, at the center of which lies the theme of time. An interpretation of the Critique of Pure Reason reveals the meaning that the problematic of time had for Kant. Here we have the core of Heidegger ’s later text, Kant and the Problem of Metaphysics, and here the individual analyses are worked out in more detailed fashion than they are in that later work. The present edition is based on Heidegger’s original manuscript, on Fritz Heidegger’s typed copy of that, and on Simon Moser’s shorthand transcript of the lectures. Because in those days Heidegger frequently departed from his original notes during the lectures, the comments recorded in Moser’s transcript were able to be taken into account for purposes of clarification. Throughout the semester Heidegger regularly went over Moser’s transcript. We find marginal notes in the transcript , as well as page-references to the transcript in Heidegger’s original manuscript. Up to §12, the section titles come from Heidegger. 345 For collaboration on this text I must thank Dr. Hüni, Dr. Schultze, as well as my wife [Marly Biemel]. She helped me check and proof a large part of the text and also undertook one final review of the finished text. Dr. Hüni and Dr. Schultze, as well as she, also helped in reading the page proofs. Aachen, June 1975 Walter Biemel 346 Editor’s Afterword ...