Ralph Metzner

Ralph Metzner, PhD, (1936–2019) was a Germany-born American psychologist, writer, and researcher focused on human consciousness and consciousness expansion. He participated in psychedelic research at Harvard University in the early 1960s with Timothy Leary and Richard Alpert (Ram Dass). His interests ranged from archetypes, shamanism, spirit animals, the environmental crisis, and the inherent spiritual connection among all beings and the planet.


Ralph Metzner: Death

The Unfolding Self: Varieties of Transformative Experience

A classic and perennially relevant book, written by one of the world's foremost authorities in the field, The Unfolding Self examines in detail the transformations that an individual undergoes in the process of their expansion of consciousness.

Varieties of Ritual Involving States of Consciousness

Rites of passage with a spiritual focus have for a long time been absent in the modern world.

The Ayahuasca Experience: A Sourcebook on the Sacred Vine of Spirits

An exploration of the chemical, biological, psychological, and experiential dimensions of ayahuasca • Details the scientific discovery of ayahuasca’s sophisticated psychoactive delivery system in the brain and body and its potential applications in medicine and psychology • Includes contribu...

The Psychedelic Experience: A Manual Based on the Tibetan Book of the Dead

More than fifty years after the Summer of Love, the promise of the psychoactive ’60s—that deeper self-awareness and greater harmony can be achieved through reality-bending substances and practices—is close to becoming a mainstream phenomenon.

Ecstasy: The Complete Guide—A Comprehensive Look at the Risks and Benefits of MDMA

Written by the world's leading experts on MDMA, Ecstasy: The Complete Guide takes the first unbiased look at the risks and the benefits of this unique drug, including the science of how it works; its promise as a treatment for depression, post-traumatic stress disorder, chronic pain, and other illne...

Consciousness Medicine: Indigenous Wisdom, Entheogens, and Expanded States of Consciousness for Healing and Growth

A comprehensive guide to the safe and ethical application of expanded states of consciousness for therapists, healing practitioners, and sincere explorers. Psychedelic medicines also known as entheogens are entering the mainstream.


Hofmann’s Potion—Albert Hofmann LSD Documentary

By the mid-1950s, LSD research was being published in medical and academic journals all over the world. It showed potential benefits in the treatment of alcoholism, drug addiction, and other mental illnesses. This film explores those potential benefits, and the researchers who explored them.

Worlds Within and Worlds Beyond

In the emerging worldview of our time, the two key paradigm revolutions are — a recognition of the multiple dimensions or worlds and recognition of the autonomy of meta-physical spirits inhabiting these many worlds. In this book, Dr.

Perspectives on the Current Global Crisis: A Conversation with Ralph Metzner

A conversation with Ralph Metzner about his book, The Expansion of Consciousness, and his reflections on questions that touch on the most profound problems we face for our survival, our existence as a species.


Ram Dass