It's a fascinating book, chock a block with amazing insights into the depth and width of the author's extensive knowledge of the concrete and the esoteric, well worth wading through, and gaining insights into the really robust and more than intuitive way he presents the mechanisms of the brain as he connects them with the experiences of the Zen practitioner. http://metapsychology.mentalhelp.net/poc/view_doc.php?type=book&id=5283&cn=452