Adler, Margot. Drawing Down the Moon: Witches, Druids, Goddess-Worshippers, and Other Pagans in America Today. Viking, 1979.
Afterman, Allen. Kabbalah and Consciousness and the Poetry of Allen Afterman. Sheep Meadow Press, 2005.
Anonymous. The Cloud of Unknowing. Translated by Mishtooni Bose. Wordsworth Editions, 2005.
———. The Way of a Pilgrim. Translated by R. M. French. Quality Paperback Book Club, 1998.
Armstrong, Karen. A Short History of Myth. Canongate, 2005.
———. The Great Transformation: The Beginning of Our Religious Traditions. Anchor, 2007.
———. Buddha. Viking Penguin, 2001.
Bancroft, Anne. The Spiritual Journey. Element, 1991.
Batson, C. Daniel, et al. Religion and the Individual: A Social-Psychological Perspective. Oxford University Press, 1993.
Blofeld, John. Taoism: The Road to Immortality. Shambhala, 2002.
Campbell, Joseph. Pathways to Bliss: Mythology and Personal Transformation. New World Library, 2005.
Campbell, Joseph, ed. The Portable Jung. Penguin, 1971.
Chesterton, G. K. Saint Francis of Assisi. Sam Torode Book Arts, 1924.
Chittick, William C. Sufism. Oneworld, 2000.
Chuang-tzu. Basic Writings. Translated by Burton Watson. Columbia University Press, 1996.
———. The Book of Chuang Tzu. Translated by Martin Palmer. Penguin, 1996.
Cohen, Yedidah, ed. A Tapestry for the Soul: The Introduction to the Zohar. Nehora Press, 2010.
Cunningham, Scott. Wicca: A Guide for the Solitary Practitioner. Llewellyn Publications, 2004.
Fadiman, James, and Robert Frager, eds. Essential Sufism. HarperCollins, 1999.
Felder, Hilarin. The Ideals of St. Francis of Assisi. Franciscan Herald Press, 1982.
Fine, Lawrence, and Louis Jacobs. Safed Spirituality: Rules of Mystical Piety, the Beginning of Wisdom. Paulist Press, 1984.
Fontana, David. Psychology, Religion, and Spirituality. Blackwell, 2003.
Forward, Martin. Religion: A Beginner’s Guide. Oneworld, 2001.
Frankl, Viktor E. Man’s Search for Meaning. Beacon Press, 1959.
Gandhi, Mohandas K. Prayer. Edited by John Strohmeier. Berkeley Hill Books, 2000.
Gardner, Martin. The Whys of a Philosophical Scrivener. St. Martin’s Griffin, 1999.
Green, Arthur. A Guide to the Zohar. Stanford University Press, 2003.
Harner, Michael. The Way of the Shaman. HarperCollins, 1980.
Harvey, Andrew. Teachings of Rumi. Shambhala, 1999.
Helminski, Kabir. The Knowing Heart: A Sufi Path of Transformation. Shambhala, 2000.
Heschel, Abraham Joshua. God in Search of Man. Farrar, Straus and Giroux, 1955.
———. Man Is Not Alone. Farrar, Straus and Giroux, 1951.
———. The Sabbath. Farrar, Straus and Giroux, 1951.
Hopkins, Jeffrey. The Tantric Distinction: A Buddhist’s Reflections on Compassion and Emptiness. Wisdom Publications, 1984.
Huang, Chungliang Al. Embrace Tiger, Return to Mountain: The Essence of Tai Ji. Celestial Arts, 1973.
Huxley, Aldous. The Perennial Philosophy: An Interpretation of the Great Mystics, East and West. HarperCollins, 1944.
James, William. The Heart of William James. Edited by Robert Richardson. Harvard University Press, 2010.
———. The Varieties of Religious Experience: A Study in Human Nature. Barnes and Noble, 1902.
Kaplan, Aryeh. Jewish Meditation: A Practical Guide. Schocken, 1985.
Lao-tzu. Tao te Ching. Translated by Red Pine. Copper Canyon Press, 2009.
———. Tao te Ching. Translated by Brian Browne Walker. St. Martin’s, 1995.
Lattin, Don, and Richard Cimino. Shopping for Faith. Jossey-Bass, 1998.
Lewis, James R., ed. The Gods Have Landed: New Religions from Other Worlds. State University of New York Press, 1995.
Martin, Nancy M., and Joseph Runzo, eds. The Meaning of Life in the World Religions. Oneworld, 2000.
Matt, Daniel C. The Essential Kabbalah: The Heart of Jewish Mysticism. HarperCollins, 1995.
Merton, Thomas. New Seeds of Contemplation. Harper San Francisco, 1961.
Narby, Jeremy, and Francis Huxley, eds. Shamans Through Time: 500 Years on the Path to Knowledge. Penguin, 2004.
Nasr, Seyyed Hossein. The Garden of Truth: The Vision and Promise of Sufism, Islam’s Mystical Tradition. HarperCollins, 2008.
Needleman, Jacob. The New Religions. Doubleday, 1970.
Newberg, Andrew, and Mark Robert Waldman. Why We Believe What We Believe: Uncovering Our Biological Need for Meaning, Spirituality, and Truth. Free Press, 2006.
Occhiogrosso, Peter. The Joy of Sects: A Spirited Guide to the World’s Religious Traditions. Doubleday, 1994.
Palmer, Susan J. Aliens Adored: Raël’s UFO Religion. Rutgers University Press, 2004.
Raël. Intelligent Design: Message from the Designers. The Raëlian Foundation, 2005.
Rambo, Lewis. Understanding Religious Conversion. Yale University Press, 1995.
Rinpoche, Sogyal. The Tibetan Book of Living and Dying. HarperCollins, 1992.
Rohr, Richard. Simplicity: The Freedom of Letting Go. Crossroad, 1991.
Roof, Wade Clark. Spiritual Marketplace: Baby Boomers and the Remaking of American Religion. Princeton University Press, 1999.
Rumi, Jalaluddin. The Essential Rumi. Translated by Coleman Barks. Castle Books, 1995.
Schumacher, E. F. A Guide for the Perplexed. Abacus, 1977.
Schwartz, Stephen. The Other Islam: Sufism and the Road to Global Harmony. Doubleday, 2008.
Shah, Idries. The Sufis. Anchor, 1964.
Shantideva. A Guide to the Bodhisattva’s Way of Life. Translated by Stephen Batchelor. Library of Tibetan Works & Archives, 1979.
Sharma, Arvind, ed. Our Religions: The Seven World Religions Introduced by Preeminent Scholars from Each Tradition. Harper San Francisco, 1993.
Shermer, Michael. How We Believe: The Search for God in an Age of Science. W. H. Freeman, 1999.
Simon, Linda. Genuine Reality: A Life of William James. University of Chicago Press, 1999.
Smith, Huston. Why Religion Matters: The Fate of the Human Spirit in an Age of Disbelief. Harper San Francisco, 2001.
———. The World’s Religions. HarperCollins, 1991.
Starr, Mirabai, ed. Saint Francis of Assisi. Sounds True, 2007.
Straub, Gerard Thomas. The Sun and Moon Over Assisi: A Personal Encounter with Francis and Clare. St. Anthony Messenger Press, 2000.
Tolstoy, Leo. A Confession. Penguin, 1882.
Trungpa, Chögyam. The Path Is the Goal: A Basic Handbook of Buddhist Meditation. Shambhala, 1995.
Vaughan-Lee, Llewellyn. The Face Before I Was Born: A Spiritual Autobiography. Golden Sufi Center, 1997.
Walsh, Roger. The World of Shamanism: New Views of an Ancient Tradition. Llewellyn Publications, 2007.
Watts, Alan. The Philosophies of Asia. Tuttle, 1995.
———. Buddhism: The Religion of No-Religion. Tuttle, 1995.
———. Tao: The Watercourse Way. Pantheon, 1975.
Weil, Simone. Waiting for God. HarperCollins, 1951.
Welch, Holmes. Taoism: The Parting of the Way. Beacon Press, 1957.
Wines, Leslie. Rumi: A Spiritual Biography. Crossroad, 2000.
Yeshe, Lama. Introduction to Tantra: The Transformation of Desire. Wisdom Publications, 1987.
———. Ego, Attachment and Liberation: Overcoming Your Mental Bureaucracy. Lama Yeshe Wisdom Archive, 2006.