Martin Heidegger (1889-1976) was Professor of Philosophy at the University of Marburg and Freiburg, and is regarded as one of the twentieth century's most original and important philosophers - as well as one of its most controversial. His work has exerted a major and enduring influence on not only philosophy, but also theology, political thought and aesthetics. The translator.

Translator's Foreword; Preliminary Considerations; Part One - Positive Definition of Philosophy from the Content of the Problem of Freedom. 1. First Breakthrough to the Proper Dimension of the Problem of Freedom in Kant. 2. The Leading Question of Philosophy and its Questionability. 3. Working the Leading Question of Metaphysics Through to the Fundamental Question of Philosophy. Part Two - Causality and Freedom; 1. Causality and Freedom as Cosmological Problem. 2. The Second Way to Freedom in the Kantian System. Conclusion: The Proper Ontological Dimension of Freedom. Editor's Afterword to the German Edition of July 1981. English-German Glossary; Greek-English Glossary