Another great book by Matthew Fox. I humbly suggest you get the musical CD called "7" by Chip Davis (Mannheim Steamrollers)and thoroughly enjoy a new perspective on the sources of energy within and without the body combining Matthew's insights and the music of Chip Davis. Extraordinary.
As usual, Matthew Fox takes readers on a spiritual journey of awakening. Full of insight, this book was especially of interest to me beacause of the holistic, Earth-based message found within. I did not find this book especially difficult, although that may be because my field of study is in this area. Perhaps if one merely reads the words it can be. However, it is almost impossible not to connect on a spiritual level with the meaning intended. Sometimes a book must be felt as well as read and Fox seems to write with that intention.