Harold G. Koenig, M.D., has degrees from Stanford University, University of California at San Francisco, and Duke University Medical Center. Dr. Koenig has also given testimony before the U.S. Senate and the United Nations concerning the benefits of religion and spirituality on health. He is the author of numerous book including five others from Templeton Foundation Press: Spirituality in Patient Care, Parish Nursing (co-authored with Verna Carson), Purpose and Power in Retirement, and coming in 2004 Spiritual Caregiving and The Healing Connection.