The Soul of Economies: Spiritual Evolution Goes to the Marketplace (With Denise Breton) Idea House, 1991
The Temples of Light: An Initiatory Journey into the Heart Teachings of the Egyptian Mystery Schools, Inner Traditions/Bear & Co., 2009
The Secret of the Soul: Using Out-of-Body Experiences to Understand Our True Nature, Harper SanFrancisco, 2001
The Secret Spiritual World of Children: The Breakthrough Discovery that Profoundly Alters Our Conventional View of Children’s Mystical Experiences / Inner Ocean, 2003
The Purposeful Universe: How Quantum Theory and Mayan Cosmology Explain the Origin and Evolution of Life, Bear & Co., 2009