DMT: The Spirit Molecule: A Doctor's Revolutionary Research into the Biology of Near-Death and Mystical Experiences

How to Change Your Mind: What the New Science of Psychedelics Teaches Us About Consciousness, Dying, Addiction, Depression, and Transcendence

The Psychedelic Explorer's Guide: Safe, Therapeutic, and Sacred Journeys

The Immortality Key: The Secret History of the Religion with No Name

Become What You Are

The Varieties of Religious Experience: A Study in Human Nature

The Book: On the Taboo Against Knowing Who You Are

The Way of Zen

Meditations: Penguin Classics