Catholic Christianity: A Complete Catechism of Catholic Beliefs Based on the Catechism of the Catholic Church

A Shorter Summa: The Essential Philosophical Passages of St. Thomas Aquinas' Summa Theologica Edited and Explained for Beginners

The Best Things in Life: A Contemporary Socrates Looks at Power, Pleasure, Truth the Good Life

Catholics and Protestants: What Can We Learn from Each Other?

Practical Theology: Spiritual Direction from Saint Thomas Aquinas

Jacob's Ladder: Ten Steps to Truth

Because God Is Real: Sixteen Questions, One Answer

Your Questions, God's Answers

Yes or No?: Straight Answers to Tough Questions About Christianity

Between Heaven and Hell: A Dialog Somewhere Beyond Death with John F. Kennedy, C. S. Lewis and Aldous Huxley

The God Who Loves You: Love Divine, All Loves Excelling

Confessions of a Cafeteria Catholic

A Refutation of Moral Relativism: Interviews with an Absolutist

Heaven, the Heart's Deepest Longing

Between One Faith and Another: Engaging Conversations on the World's Great Religions

Why Does Everything Come in Threes?: A Short Book about Everything

Ask Peter Kreeft: The 100 Most Interesting Questions He's Ever Been Asked

Forty Reasons I Am a Catholic

Three Approaches to Abortion: A Thoughtful and Compassionate Guide to Today's Most Controversial Issue

Angels and Demons: What Do We Really Know about Them?