Mystics, Masters, Saints, and Sages: Stories of Enlightenment

The Mystic Heart: Discovering a Universal Spirituality in the World's Religions

The Relaxation Response

The World's Religions (Plus)

Mysticism and the Spiritual Quest: A Crosscultural Anthology

Behind the Mind

World Religions

Supplements to A Course in Miracles

The Surrender Experiment: My Journey into Life's Perfection

Apprentice to the Masters: Adventures of a Western Mystic, Part II (Volume 2)

The Ultimate Truth (About Love & Happiness): A Handbook to Life