is Professor of Jewish Thought and Intellectual History at the Hebrew University of Jerusalem. He is the co-editor of The Journal of Jewish Thought and Philosophy and has written and edited numerous books, among them Divided Passions: Jewish Intellectuals and the Experience of Modernity and (with Jehuda Reinharz) The Jew in the Modern World. He recently completed a volume entitled A Land of Two Rivers: The German-Jewish Vision of New Babylon. He is currently Acting Director of The Franz Rosenzweig Research Center for German-Jewish Literature and Cultural History at The Hebrew University. He has served as a guest professor at universities in the United States and in Germany.