Ralph Metzner PhD (born May 18, 1936, in Germany) is an American psychologist, writer and researcher, born in Germany, who participated in psychedelic research at Harvard University in the early 1960s with Timothy Leary and Richard Alpert (later named Ram Dass). Metzner is a psychotherapist, and Professor Emeritus of psychology at the California Institute of Integral Studies in San Francisco, where he was formerly the Academic Dean and Academic Vice-president.
Metzner has been involved in consciousness research, including psychedelics, yoga, meditation and shamanism for over 45 years. He is a co-founder and President of the Green Earth Foundation, a non-profit educational organization devoted to healing and harmonizing the relationship between humans and the Earth, and a signatory to the 9/11 Truth Statement. Metzner was featured in the 2006 film Entheogen: Awakening the Divine Within, a documentary about rediscovering an enchanted cosmos in the modern world.
He conducts workshops on consciousness transformation and alchemical divination, both nationally and internationally. He is also a poet and singer-songwriter and has produced two CDs with Kit Walker: A spoken word CD ("Spirit Soundings," with music by Kit Walker) and one music CD of original songs ("Bardo Blues").
Metzner, Ralph (2013). The Toad and the Jaguar: A Field Report of Underground Research on a Visionary Medicine: Bufo Alvarius And 5-Methoxy-dimethyltryptamine (paperback ed.). Berkeley, CA: Green Earth Foundation & Regent Press. ISBN978-1587902543.
Metzner, Ralph (2010). Birth of a Psychedelic Culture: Conversations about Leary, the Harvard Experiments, Millbrook and the Sixties (paperback ed.). Santa Fe, NM: Synergetic Press. ISBN978-0-907791-38-6.
Metzner, Ralph (2009). Mind Space Time Stream (paperback ed.). Berkeley, CA: Green Earth Foundation & Regent Press. ISBN978-1-58790-172-0.
Metzner, Ralph (2009). Alchemical Divination (paperback ed.). Berkeley, CA: Green Earth Foundation & Regent Press. ISBN978-1-58790-162-1.
Metzner, Ralph (2008). The Roots of War and Domination (paperback ed.). Berkeley, CA: Green Earth Foundation & Regent Press. ISBN978-1-58790-150-8.
Metzner, Ralph (2008). The Expansion of Consciousness (paperback ed.). Berkeley, CA: Green Earth Foundation & Regent Press. ISBN978-1-58790-147-8.
Sacred Vine of Spirits: Ayahuasca (paperback ed.). Rochester, VT: Park Street Press. 2006. ISBN1-59477-053-0.
Sacred Mushroom of Visions: Teonanacatl (paperback ed.). Rochester, VT: Park Street Press. 2005. ISBN1-59477-044-1.
Green Psychology – Transforming our Relationship to the Earth (paperback ed.). Rochester, VT: Park Street Press. 1999. ISBN0-89281-798-4.
The Unfolding Self: Varieties of Transformative Experience (rev. ed. of Opening to Inner Light ed.). Novato, CA: Origin Press. 1998. ISBN1-57983-000-5.
The Well of Remembrance: Rediscovering the Earth Wisdom Myths of Northern Europe. Boston: Shambhala. 1994. ISBN1-57062-028-8.
Opening to Inner Light: The Transformation of Human Nature and Consciousness. Los Angeles: J.P. Tarcher. 1986. ISBN0-87477-354-7.