Calvin G. Normore is Brian P. Copenhaver Professor of Philosophy, UCLA, Emeritus Macdonald Professor of Moral Philosophy, McGill University, and Honorary Professor of Philosophy, the University of Queensland. He is a member of the American Academy of Arts and Sciences and former President of the Pacific Division of the American Philosophical Association. His Ph.D. is in Philosophy from the University of Toronto. He has held regular academic positions at Princeton, the University of Toronto, and (since 1998) at UCLA and irregular ones at the University of Alberta, York University, Columbia, U.C. Irvine, the Ohio State University and Yale. From 2008-2011 he also held the William MacDonald Chair of Moral Philosophy at McGill University. He specializes in the History of Philosophy, and works (if you call it work) in such diverse areas as metaphysics, the philosophy of time, political philosophy and logic.Stephan Schmid is Professor of the History of Philosophy at Universität Hamburg, and Co-Director of the Maimonides Centre of Advanced Studies: Jewish Scepticism. He works on early modern and late medieval philosophy with a particular focus on the work of Suárez, Descartes, Malebranche, Spinoza, and Leibniz. He is especially interested in questions at the intersection of metaphysics, epistemology and philosophy of mind and is the editor and author of various volumes and articles that have been published with Ergo, Cambridge University Press, De Gruyter, Oxford University Press, Routledge, and Suhrkamp.