The Christian Idea of God: A Philosophical Foundation for Faith

Man's Search for Meaning

Adventures in Belief: How I Discovered the Meaning of Life, the Universe, and Everything (Possibly)

Cold-Case Christianity: A Homicide Detective Investigates the Claims of the Gospels

Christianity: A Beginner's Guide

Living Buddha, Living Christ 20th Anniversary Edition

Spirituality and Christian Belief: Positive Christianity, with All the Bad Bits Taken Out

Wicca: A Guide for the Solitary Practitioner

The Mystery of Christ: Meditations And Prayers

On Guard: Defending Your Faith with Reason and Precision

The Development of Kant's View of Ethics

Seeking Allah, Finding Jesus: A Devout Muslim Encounters Christianity

Parables of Time and Eternity

Illuminati: The Secret Society That Hijacked the World (The History of One of the World's Most Notorious Secret Societies)

God: A Guide for the Perplexed

A History of Religious Ideas, Volume 2: From Gautama Buddha to the Triumph of Christianity, Volume 2

Morality, Autonomy, and God

Witchcraft: Theory and Practice

The Word of God?: The Bible after modern scholarship

Is the Bible God's Word?