Personality

Diamond Heart: Book Five: Inexhaustible Mystery

The Diamond Approach:

Facets of Unity: The Enneagram of Holy Ideas

Diamond Heart, Book Three: Being and the Meaning of Life

Diamond Heart, Book Two: The Freedom to Be

The Penguin and the Leviathan: How Cooperation Triumphs over Self-Interest

What's So Wrong with Being Absolutely Right: The Dangerous Nature of Dogmatic Belief

The Art of Risk: The New Science of Courage, Caution, and Chance

Into the Magic Shop: A Neurosurgeon's Quest to Discover the Mysteries of the Brain and the Secrets of the Heart

Quiet: The Power of Introverts in a World That Can't Stop Talking

The Wisdom of the Enneagram: The Complete Guide to Psychological and Spiritual Growth for the Nine Personality Types