- A Brief, Liberal, Catholic Defense of Abortion
- St. John of the Cross: An Appreciation (Suny Series in Latin American and Iberian Thought and Culture)
- The Philosophy of Vegetarianism
- Rethinking the Ontological Argument: A Neoclassical Theistic Response
- Analytic Theism, Hartshorne, and the Concept of God (Suny Series in Philosophy)