Emil Fackenheim is professor of Philosophy Emeritus, University of Toronto, and professor of Philosophy at the Hebrew University, Jerusalem. He is the author of numerous books, including To Mend the World and Encounters between Judaism and Modern Philosophy.John W. Burbidge is a professor in the Department of Philosophy at Trent University. He is the author of Hegel on Logic and Religion and Real Process: How Logic and Chemistry Combine in Hegel's Philosophy of Nature.