Russ Hudson, co-founder of the Enneagram Institute, is one of the principal scholars and innovative thinkers in the Enneagram world today. He is also the executive director of Enneagram Personality Types, Inc. He has been co-teaching the Enneagram Professional Training Programs since 1991, and is a founding director and former vice president of the International Enneagram Association. He is the co-author of The Wisdom of the Enneagram, Personality Types, Understanding the Enneagram, and Discovering Your Personality Type. He holds a degree in East Asian studies from Columbia University in New York, from which he graduated Phi Beta Kappa.