I put this book on my "shelf" on Goodreads on November 18, 2012! I have been exposed to the Enneagram since 2011, but I had to read the "gateway drug" books like The Road Back to You first to get into the heavier material.
I am so glad I finally got around to reading this. I kept checking it out of the library with no hope of ever getting through its almost 400 pages. I finally ordered my own copy, and I am so glad I did. I underlined so much and wrote a lot of notes in the margin. I would say this is the most comprehensive book of any of the Enneagram books I have read so far. What finally pushed me over the edge to read it was taking a 10 Week class from Russ Hudson with a live Q & A at the end. I was so IMPRESSED by this warm and generous soul that I had to read the book. I also wanted to read it because I get daily EnneaThoughts in my email, and they are often quotes from this book.