Helen Palmer is the author of the best-selling The Enneagram, The Enneagram in Love and Work, and The Pocket Enneagram. She codirects the Center for Enneagram Studies and Teaching in Berkeley, California, and regularly conducts workshops and lectures around the world.
Paul B. Brown, a former writer and editor for Business Week, Financial World, Forbes, and Inc., has written eight books, including the best-selling Grow Rich Slowly. He lives with his son and daughter in Duxbury, Massachusetts.