Harold G. Koenig, M.D.,is the Director of Duke University's Center for the Study of Religion/Spirituality and Health. He is also Associate Professor of Psychiatry and Behavioral Sciences and Associate Professor of Medicine at Duke University Medical Center. Dr. Koenig is the author of fourteen books and over 175 articles for a professional audience. This is his first book for the general public. He lives in Durham, North Carolina, with his wife and two children.