Gerardo Ruben Sandoval Isaac is a doctor, gynecologist, medicine man, and founder and director of The Bufo Alvarius Foundation. He performs 5-MeO-DMT ceremonies around the world. He lives in Mexico. Martin W. Ball is a writer, publisher, visionary artist, and musician. He earned his MA and PhD in Religious Studies in 2000 with an emphasis on Native American traditions, Philosophy of Science and Religion, and the Phenomenology of Mystical and Shamanic Experience. He is the author of numerous books, including Being Human: An Entheological Guide to God, Evolution, and the Fractal, Energetic Nature of Reality. He lives in Ashland, Oregon.