Freedom from the Known: A Study of Conditioning, Freedom, and the Nature of the Self

The Universe Next Door: A Basic Worldview Catalog

Sacred Earth, Sacred Soul: Celtic Wisdom for Reawakening to What Our Souls Know and Healing the World

Devotional Classics: Revised Edition: Selected Readings for Individuals and Groups – An Indispensable Companion to a Holistic Spiritual Life Through Six Streams of Faith

Five Proofs of the Existence of God

The Essence of Buddha: The Path to Enlightenment

The Sin of Certainty: Why God Desires Our Trust More Than Our "Correct" Beliefs

A Secular Age

Tao Te Ching

The Everlasting Man: A Guide to G.K. Chesterton’s Masterpiece