The Well of Remembrance: Rediscovering the Earth Wisdom Myths of Northern Europe

Green Psychology: Transforming our Relationship to the Earth

The Roots of War and Domination

Ayahuasca Experience. A Sourcebook on the Sacred Vine of Spirits, Paperback

Psychedelic Experience, Paperback

Maps of Consciousness: The Classic Text on Exploring the Mind and Expanding Awareness

Alchemical Musings

Allies for Awakening: Guidelines for productive and safe experiences with entheogens

The Toad and the Jaguar: A Field Report of Underground Research on a Visionary Medicine Bufo alvarius and 5-methoxy-dimethyltryptamine

The Unfolding Self: Varieties of Transformative Experience