For me, the modern age is characterized by some interesting excesses, and Wilber satisfyingly identifies many of them in his spiritual journey here. Three favorite targets I found were: (1) the attempt to make things simpler than they really are in order to explain them, which analytic philosopher Dan Dennett calls "greedy reductionism," (2) the "rage against reason" found in much postmodernism that rejects the notion of objective reality and confident knowledge; and (3) extreme conservative thinking unable to come to grips with the vision of a complex evolving universe.
Wilber has a brilliant imagination and he is a very engaging writer, and this book (probably his best) deals with all three of those excesses in a fascinating way. His overall approach is not original of course (it is essentially a spiritual interpretation of systems and process metaphysics, but there are some very original elements sprinkled here and there. And probably the best thing about this book is that it does a competent job of presenting and integrating ideas from many diverse fields, in addressing the modern excesses, and trying to come up with a satisfying spiritual worldview for our complex age.
This is beautifully ironic, since what he attempts is the very essence of reductionism (!), something Wilber rails against mightily in this book when the "reductionists" disagree with his ideas because the "reduction" is not spiritually meaningful.
For comparison, the conservative religious/creationist critique of Darwinism holds that a universe composed of material elements that interact algorithmically ("machines") cannot also contain spiritual meaning. The Catholic Pope avoided that bind in support of evolution by imbuing material with living Spirit. Wilber uses the metaphysics of systems and processes rather than living Spirit, making his version, (like that of theologian Haught), noticeably more (if still imperfectly) compatible with the scientific worldview.
But this attack of reductionism while using to make his point is the big flaw, to me, in an otherwise very compelling, ambitious, and scholarly synthesis of many of the most profound ideas ever recorded in human thinking.
Indeed, this book seems like it would be sure to appeal to a wide variety of people who, like me, are looking for a way of making sense of our world where we don't bury our head in the sand against uncomfortable aspects of the scientific worldview, nor reject the implications of being spiritual beings who crave meaning.
Technically, the main problem I found is Wilber's annoyingly spotty attention to analysis (which seems worse because he does it reasonably well when he does it), in favor of linking ideas through metaphor. It makes his ideas flow like repetitive New Age spiritual poetry, from science to theology to philosophy and back again, but it doesn't quite hold together for me. It feeds the soul in many places, and feeds the intellect in many places, but not quite both at once.
If this was just a book of inspiring metaphor, the science would be distracting, and as a work of argumentation it is largely devoid of rigor. The result is arguably appropriate to the topic, since one of his targets is the dictatorship of materialist reasoning in science. However, he seems to lapse briefly into some of the excesses of postmodernism or even wishful superstition when after building a perfectly good concept from the ground up, he throws out conclusions that only fit by analogy. The usual leap of faith needed to appreciate any book of religion is then required. This contrasts with the well-reasoned argument leading up to that point. It is perhaps, as other reviewers pointed out, that he has taken on so very much.
He is left, sadly, with the same problems that some populists of complexity theory have, their passion for applying their ideas goes beyond what they've actually demonstrated... they _could_ (probably ?) well be right, but they've at that point only built an illusion of scientific soundness by telling a masterful story.
This encyclopedic book joins Murphy's masterpiece, "Future of the Body," as another magnificent attempt to construct a new spirituality out of scientific, humanistic, and religious traditions. I applaud his efforts, and I think this is a very worthy book that introduces in understandable form many important complex ideas that most people would otherwise not have the chance to engage. For the sake of space, I'd like to refer interested readers to many of the excellent points made in Frederick Polgardy's very fine review previously here.
