Joshua M. Greene is a Laurel Vlock Fellow for Holocaust Testimonies at Yale University. He earned his degrees at Hofstra University, where he taught for ten years in the Department of Religion and Philosophy. Since 2000, he has written biographies of Holocaust survivors and other testimonies that have sold over half a million copies. From 2006 to 2018, he taught the philosophy of yoga at the Jivamukti Yoga School in New York and continues to teach as a guest instructor at yoga studios nationwide. In 1970, he received diksha initiation from Bhaktivedanta Swami Prabhupada. Since then, his students have called him by his initiation name, Yogesvara.