Roger Walsh MD, Ph.D. DHL is a professor emeritus of psychiatry, philosophy, and anthropology at the University of California, whose research focusses on topics such as meditation, psychological wellbeing, wisdom, and the psychological roots of our global crises. His books include Essential Spirituality as well as The World of Shamanism, and his research and writings have received over twenty national and international awards. He is a student and researcher of contemplative practices, an authorized lama in Tibetan Buddhism, and cohost of the podcast Deep Transformation: Self-Society-Spirit with listeners in over 190 countries, www.deeptransformation.io. His more curious careers include having been a circus acrobat, and having had an extremely brief and unsuccessful career as a standup comedian. For more information see www.drrogerwalsh.com