- God and the Natural Law: A Rereading of Thomas Aquinas
- The Black Eagle
- From Aristotle to Thomas Aquinas: Natural Law, Practical Knowledge, and the Person
- Ancient Wisdom and Thomistic Wit: Happiness and the Good Life
- Questioni di legge naturale: Fede, eutanasia, matrimonio, aborto, omosessualità (Thomistica)