Zalman Schachter-Shalomi is a pre-eminent rabbi, teacher, and Professor Emeritus at Temple University and Naropa University. He is the founder of the Spiritual Eldering Institute in Philadelphia, which sponsors workshops nationwide that provide the psychological and spiritual tools for people of all ages to grow into elderhood. Most recently he worked on The December Project with author Sarah Davidson. He is now retired and is pursuing his own December work.
Ronald S. Miller is an award-winning journalist and the author of As Above, So Below: Paths to Spiritual Renewal in Daily Life. He has taught courses in human development, transpersonal psychology, and stress management at universities and growth centers. He lives in San Diego where he teaches college English, edits books, and continues exploring the joys of elderhood.