The Stellar Mind: The Fundamental Intelligence of the Universe

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

Return to the Medium: Science, Spirit and the Mystery of Afterlife

On Guard: Defending Your Faith with Reason and Precision

The Breath of Reality: A Scientific and Spiritual Guide to Breathing, Meditation and Manifestation

Living Buddha, Living Christ 20th Anniversary Edition

Consciousness - Where Did It Come From and Where Is It Going?

Wicca: A Guide for the Solitary Practitioner

Whole Health - A Complete Guide to Body, Mind and Longevity

Seeking Allah, Finding Jesus: A Devout Muslim Encounters Christianity

The Sacred Alphabet: Language, Meaning and Mind

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

The Reflective Mind: A Mirror of Consciousness

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

Dreaming the Universe: Exploring the Hidden Secrets of Sleep

Is the Bible God's Word?

The Story of Space: From Spirit Realms to Spacetime and Beyond

Evolution of Stress: A Journey Through Human Stress and the Art of Mastering It

Jerusalem: One City, Three Faiths