Andrew Newberg, MD, is the director of research at the Jefferson Myrna Brind Center of Integrative Medicine and the bestselling author or coauthor of several books, including How God Changes Your Brain.
Eugene d'Aquili, MD, PhD, was a clinical assistant professor in the Department of Psychiatry at the University of Pennsylvania for twenty years. His numerous books include Biogenetic Structuralism; Brain, Symbol and Experience; and The Mystical Mind. Dr. d'Aquili died in 1998.
Vince Rause is a freelance writer and journalist whose stories have appeared in the New York Times Magazine, the Philadelphia Inquirer, and many other publications.
Joe Barrett has been a working stage, screen, and recording booth actor since 1974 and an award-winning and eight-time Audie Award-nominated audiobook narrator since 1999. He also practiced law for five years-but don't hold that against him. Joe is married to actress Andrea Wright, and together they have four children.