The Mystery of Union with God: Dionysian Mysticism in Albert the Great and Thomas Aquinas (Thomistic Ressourcement Series)
Form and Being: Studies in Thomistic Metaphysics (Studies in Philosophy and the History of Philosophy)
The Paschal Precept (1932) (CUA Studies in Canon Law)
A Reason Open to God: On Universities, Education, and Culture
Mind, Matter, and Nature: A Thomistic Proposal for the Philosophy of Mind
Guiding to a Blessed End: Andrew of Caesarea and His Apocalypse Commentary in the Ancient Church
Boethius and Aquinas
Commentary on the Epistle to the Romans, Books 6-10 (Fathers of the Church Patristic Series)