This is one of about 30 books written or edited by a man named Matthew Fox. Fox is a defrocked priest who has found a home in the Episcopal Church, and is, in his own words, "Attempting to reinvent worship to bring it up to date with today's community and beliefs." He presides over what is called the Cosmic Mass, a meeting of worshipers that incorporates rap and techno rock music, and substitutes dancing for prayers. He also advocates the worship of what he calls the Cosmic Christ, which is a theology that combines teachings from such diverse religions as Buddhism, Native American Spirituality, and Catholicism, and has a strong enviromentalist bent.
The greater part of this book is spent in bringing up various subjects within theology, comparing what the differnt faiths have to say about them, and basically attempting to demonstrate that they all teach the same precepts. This is all well and good, except when one begins to take a look at the different teachers and scholars that Fox is quoting. The teacher that he quotes from the most is Meister Eckhart, a 13th century priest of the Catholic Church. This is a man that is now considered one of the first Christian mystics, but who died after being accused and convicted of heresy by the Pope. The second is Hildegard of Bingen, a 12th century abbess. She is known for her volumous writings, which include musical compositions, but was also involved in considerable controversy for her friction with the bishops and cardinals who were above her in the hierarcy of the Church. Her only saving grace was that her followers believed that she was the recipient of visions, and she was allowed to die peacefully in her bed. The third is Ibn Al-Arabi, a 12th century Sufi teacher. Sufism is the mystical branch of Islam, and even today fundamentalist Muslims call him a heretic and apostate.
Though these examples are not, by far, the only traditions that Fox pulls from, I think we can begin to see a pattern here. Fox has concentrated his examples from only the mystic sects of the main world religions, combining them with the Goddess-centered religions, like Native American Spiritualism, and the pantheon religions, such as Hinduism, in an attempt to create his own personal version of religion and belief. While I am not saying, in any way, that any of these religions are wrong or bad, I am saying that this is a man who is using a collection of splinter mystics, whom the majority within their own religions do not agree with, to justify a way of believing that is, itself, his own mysticism. This fact takes away from his arguments in a substantial way. Fox may be correct in many of his assertions, but he is definitely climbing the slippery side of the slope attempting to prove it.