Mark Waldman is a therapist and an Associate Fellow at the Center for Spirituality and the Mind, at the University of Pennsylvania. He has authored 10 books on neuroscience, relationships,and spirituality, including the recent book, Why We Believe What We Believe. He and Dr. Andrew Newberg are the world’s leading authorities on spirituality and the brain, and their research has been featured in the New York Times, National Geographic Television, on 20/20 and dozens of other television and radio programs.