Gyula Klima is Professor of Philosophy at Fordham University, USA, and a Doctor of the Hungarian Academy of Sciences. He is also Director and a founding member of the Society for Medieval Logic and Metaphysics and editor of its proceedings. His most recent book is Questions on the Soul by John Buridan and Others: A Companion to John Buridan’s Philosophy of Mind.Alex Hall is a Professor of Philosophy at Clayton State University, USA. He is Assistant Director of the Society for Medieval Logic and Metaphysics and Managing Editor of its proceedings. His recent publications include “Aquinas on Knowledge and Demonstration,” in The Philosophy of Knowledge: A History.