Rabbi Daniel Cohn-Sherbok has a Ph.D. in philosophy from Cambridge University (UK) and an honorary doctorate in divinity from the Hebrew Union College-Jewish Institute of Religion. He has written numerous books, including The Blackwell Dictionary of Judaica and Fifty Key Jewish Thinkers. He is currently Professor of Judaism at the University of Wales, Lampeter, Wales. Previous books include The Crucified Jew: Twenty Centuries of Christian Anti-Semitism and God and the Holocaust. David McLellan is Professor of Political Theory at Goldsmiths College, London, UK. His books on Marx and Marxism have been translated into many languages. His most recent publications are "Simone Weil: Utopian Pessimist" and "Unto Caesar: The Political Relevance of Christianity,"