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

Doors in the Walls of the World: Signs of Transcendence in the Human Story

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

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

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

Heaven, the Heart's Deepest Longing

How to Destroy Western Civilization and Other Ideas from the Cultural Abyss

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

Confessions of a Cafeteria Catholic

Your Questions, God's Answers

Fundamentals of the Faith: Essays in Christian Apologetics

Jacob's Ladder: Ten Steps to Truth

Because God Is Real: Sixteen Questions, One Answer

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

The Greatest Philosopher Who Ever Lived

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

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

Forty Reasons I Am a Catholic

Three Philosophies of Life: Ecclesiastes, Job, and Song of Songs

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