Andrew Newberg is the director of research at the Marcus Institute of Integrative Health at Thomas Jefferson University Hospital. His books include Why God Wonāt Go Away: Brain Science and the Biology of Belief (2001), Why We Believe What We Believe: Uncovering Our Biological Need for Meaning, Spirituality, and Truth (2006), How God Changes Your Brain: Breakthrough Findings from a Leading Neuroscientist (2009), and Principles of Neurotheology (2010).