Stephen Cope is the director of the Kripalu Institute for Extraordinary Living, the largest yoga research institute in the Western world—with a team of scientists affiliated with major medical schools on the East coast, primarily Harvard Medical School. He has been for many years the senior scholar in residence at Kripalu Center for Yoga and Health in Lenox, Massachusetts, and is the author of four best-selling books, including Yoga and the Quest for the True Self, The Wisdom of Yoga, and, most recently, The Great Work of Your Life: A Guide for the Journey to Your True Calling.