Ralph Metzner, Ph.D.

Photo by: Geneva Shanti

Ralph Metzner, Ph.D., helped found the Harvard Psilocybin Project in 1960 and is now a psychotherapist and professor at the California Institute of Integral Studies in San Francisco. He is the author of many books, including The Psychedelic Experience (with Timothy Leary and Richard Alpert), Maps of Consciousness, Opening to Inner Light, and The Well of Remembrance. He lives in Sonoma, California.

Books By Ralph Metzner, Ph.D.

  1. Green Psychology

    Green Psychology

    By Ralph Metzner, Ph.D.

    The idea of domination over nature has led to an unprecedented destruction of the very systems which support us. Ralph Metzner explores the history of this global pathology and shows that disciplines such as deep ecology and ecofeminism are creating a worldview in which the mind of humanity and the health of the Earth may be harmoniously intertwined.
  2. The Ayahuasca Experience

    The Ayahuasca Experience

    Edited by Ralph Metzner, Ph.D.

    Ayahuasca has been used by native Indian and mestizo shamans for thousands of years. Made from the vine Banisteriopsis caapi and the DMT-laden leaf of Psychotria viridis, ayahuasca is regarded as the embodiment of intelligent plant beings who offer spiritual teachings and healing to those who respectfully engage with them. With contributions from Dennis J. McKenna, Charles S. Grob, and J. C. Calloway, among others.
  3. Sacred Mushroom of Visions: Teonanácatl

    Sacred Mushroom of Visions: Teonanácatl

    Edited by Ralph Metzner, Ph.D.

    Sacred Mushroom of Visions: Teonanácatl describes the experiences of psychoactive mushroom users and how the use of the psilocybe mushroom spread from Mexico to North America, Asia, and Europe. Firsthand accounts of the controversial Harvard Psilocybin Project, the use of psilocybin in psychotherapy, and current studies on the treatment of obsessive compulsive disorder (OCD) are provided.
  4. Overtones and Undercurrents

    Overtones and Undercurrents

    By Ralph Metzner, Ph.D.

    Pioneering transpersonal psychotherapist Ralph Metzner shares case histories from more than 50 years of practice. They include a wide spectrum of practices, such as the use of quiet meditative retreat, guided regressions, as well as imagery visualizations amplified by entheogens.
  5. Searching for the Philosophers’ Stone

    Searching for the Philosophers’ Stone

    By Ralph Metzner, Ph.D.

    Through captivating stories, respected psychedelic elder Ralph Metzner, Ph.D., shares his encounters from the 1960s onward with mystics, animal guides, plant spirits like iboga and ayahuasca, genius scientists, and shamanic healers, including Albert Hofmann, Alexander Shulgin, the McKenna brothers, Myron Stolaroff, Leo Zeff, and Hawaiian healer Morrnah Simeona.