An historian of American thought and culture, Mark Ryan was Dean of Jonathan Edwards College and a teacher of American Studies and history at Yale University for more than twenty years. Subsequently he was Titular IV Professor at the Universidad de las Américas in Puebla, Mexico, where he also served as Dean of the Colleges, Regente (Head) of José Gaos College, and Coordinator of the master’s degree program in United States Studies. He holds Ph.D. and M. Phil. degrees from Yale, an M.A. from the University of Texas at Austin, and a B.A. from the University of St. Thomas. Mark is author of A Different Dimension: Reflections on the History of Transpersonal Thought (Westphalia Press, 2018), A Collegiate Way of Living (Yale University, 2001), articles in various journals on higher education, and articles in TheJournal of Transpersonal Psychology and related publications on the history of psychology. He is certified by Grof Transpersonal Training as a practitioner of Holotropic Breathwork, served for fourteen years on the Board of Trustees of Naropa University, is past chair of the Board of Directors of Wisdom University, and past chair and current trustee of the Jonathan Edwards Trust at Yale. Living now in his native city of Houston, Mark teaches and lectures at the C. G. Jung Educational Center and other venues, and is a principal facilitator of Holotropic Breathwork Houston.