Facets of Unity: The Enneagram of Holy Ideas

The Spiritual Dimension of the Enneagram: Nine Faces of the Soul

The Enneagram of Passions and Virtues: Finding the Way Home

The Unfolding Now: Realizing Your True Nature through the Practice of Presence

Elements of the Real in Man (Diamond Heart, Book 1)

The Pearl Beyond Price: Integration of Personality into Being: An Object Relations Approach (Diamond Mind Series, No. 2)

The Complete Enneagram: 27 Paths to Greater Self-Knowledge

The Alchemy of Freedom: The Philosophers' Stone and the Secrets of Existence

The Freedom to Be (Diamond Heart, Book 2)

The Point of Existence: Transformations of Narcissism in Self-Realization (Diamond Mind Series, 3)

Ennea-type Structures: Self-Analysis for the Seeker (Consciousness Classics)