The 9 dimensions of the soul : essence and the enneagram - HEY (Winchester, U.K., Washington, U.S.A: : O Books, 2006)
Written in a beautifully simple, insightful and heartful way, this transmits complex material in a way that is easy to read and understand. Also It is a welcome addition to the literature on the enneagram by integrating the 'Essence Work' of A. H. Almaas and Faisal Muqaddam with the traditional understanding of the nine aspects of the enneagram..
Keywords: Enneagram; Soul