God Is Not Dead: What Quantum Physics Tells Us about Our Origins and How We Should Live, Hampton Roads, 2008

God Stories: Inspiring Encounters with the Divine, Harmony Books, 2008

God, Goddess the Astrologer: Soul, Karma and Reincarnation and How We Continually Create Our Own Destiny / Torchlight Publishing, 2001

Goddesses in Everywoman: Powerful Archetypes in Women’s Lives, William Morrow, 1984/2004

Graceful Passages: A Companion for Living and Dying (With Gary Malkin) / New World Library, 2003

Graceful Passages: A Companion for Living and Dying / New World Library, 2003

Green Psychology: Transforming Our Relationship to the Earth (or: Cultivating A Spiritual Connection with the Natural World) / Park Street Press, 1999

Grow Younger, Live Longer: 10 Steps to Reverse Aging / Co-author, David Simon,M.D. / Harmony Books, 2001

From Science to God: A Physicist’s Journey Into the Mystery of Consciousness / New World Library, 2003

Frontiers of the Soul: Exploring Psychic Evolution