Thomas Williams is the Isabelle A. and Henry D. Martin Professor of Medieval Philosophy at Georgetown University. He has published widely on medieval philosophy and theology. He is coauthor of Anselm, editor of The Cambridge Companion to Medieval Ethics and The Cambridge Companion to Duns Scotus, and translator of Augustine: Confessions, John Duns Scotus: Selected Writings on Ethics, Thomas Aquinas: The Treatise on Happiness and Treatise on Human Acts, and Anselm: The Complete Treatises with Selected Letters and Prayers and the Meditation on Human Redemption.
