received his PhD at Warsaw University in 1974 with a dissertation on Heidegger (Heidegger i Filozofia Współczesna, Warszawa 1978). He has taught philosophy at Warsaw University ever since. He was a Humboldt Fellow in Germany in 1977-1978. During his stay, he joined an international team working on “Logic and Time” at the Protestant Institute for Interdisciplinary Research in Heidelberg. 1981-1982 he co-chaired (with Hans-Georg Gadamer and Gottfried Boehm) post-graduate courses at the Interuniversity Centre in Dubrovnik on “Hermeneutics and the Arts” and was a Thyssen Fellow at the University of Heidelberg. He was a Visiting Fellow of Churchill College at the Cambridge (1982-83) and a Visiting Professor of Philosophy at the University of Vienna (1984-85). In 1982, he assumed his present position of Rector of the Institut für die Wissenschaften vom Menschen (IWM) in Vienna. He was habilitated in Philosophy at the University of Warsaw in 1986 (Logika i czas. Próba analizy Husserlowskiej teorii sensu, Warsaw 1988; English translation: Logic and Time. An Essay on Husserl’s Theory of Meaning, Dordrecht, 1996). In the same year he was appointed Visiting Professor and in 1990 Professor of Philosophy at Boston University. In 1995 he was elected Chairman of the Supervisory Board of the Institute for Public Affairs (Instytut Spraw Publicznych) in Warsaw. Since 1990, he has co-chaired (with Leszek Kolakowski, Michael Sandel, Edward Shils, Charles Taylor and others) seminars at IWM’s annual Cortona Summer School on Philosophy and Politics. He is the editor of the bi-annual journal Transit. Europäische Revue published by Verlag Neue Kritik, Frankfurt a.M., and of the series “Castelgandolfo-Gespräche” published by Klett-Cotta in Stuttgart. Among his other publications is Conditions of European Solidarity, (Budapest/New York: Central European University Press, 2006) and Płomień Wieczności. Eseje o myslach Fryderyka Nietzschego (Kraków: Znak, 2007) to be published in English at Princeton University Press in 2011.