As a caveat for this review: I have not read any of Wallace-Murphy's other work and that deficit possibly explains my reaction to this work. I bought it hoping to learn something substantive about the "secrets of the Western esoteric tradition," but that subtitle is misleading. Wallace-Murphy writes very little indeed about the "secrets" of this tradition, and what he does write about it is either mistaken or self-contradictory (quite possibly deliberately so). This book appears to be a synthesis of several of his previous works along with the work of similarly minded writers. It takes a chronological view of Western civilization from prehistory through the first decade of the 21st century (although, with his advocacy of the "Aquarian Age," Wallace-Murphy could be seen as actually stuck somewhere in the 1960s-1970s in terms of his mystical thinking; most of the book is written as if 9/11 had never happened and that anything is possible for humanity if only we believed hard enough). His major claim is that the "Western esoteric tradition" is basically Gnosticism, which he claims was transmitted from ancient Egypt in an unbroken line of initiation through to at least the Knights Templar and the Masons. Wallace-Murphy never cites a scholarly source for his understanding of gnosticism (certainly not Elaine Pagels, which for most scholars would be their go-to source). Along the way he reviews the sins of the Catholic and Protestant faiths (though even here he is inconsistent: he damns the Catholics, rightly so, for the brutality of the genocide of the Cathars, but also seems to prefer the tenets of the Catholic faith to those of Protestantism, which he blames for the gradual move toward secular science and humanity's alienation from the spiritual side of science and life. His greatest fault, however, is a contradiction in his understanding of the implications of a gnostic worldview. He admires the 'gnostic" Cathars for their lack of fear at being killed (they would, after all, be united with the true God and freed from the material cage trapping their divine essence in a corrupt body; so far, so good). However, his (quite justifiable) concerns about ecology and pacifism he _also_ claims as gnostic concerns, even though a true gnostic would understand that the entire existence of the universe is the greatest sin: created by a self-centered Demiurge playing at being God, all matter is sinful, a trap for the spirit, and must be escaped from. This being so, why would any gnostic care about whether we harm our environment or whether we free people from this soul-trapping universe by killing them? Any gnostic wouldn't care, they would welcome it.
Part of Wallace-Murphy's problem in this book is that he is really unable to unite the "esoteric" parts of his argument with the cultural/historical parts. The work is very disjointed and feels like an attempt to capture absolutely everything about everything (which just gets tiresome). He also frequently cites only _one_ source for the major topics he discusses. For example, while Eric Hobsbawm is a great (marxist) historian, a true scholar would not rely solely on Hobsbawn to talk about economic and imperial history; there should be a variety of sources consulted, if only to ensure that the author properly comprehends the diverse viewpoints on his subject matter. This Wallace-Murphy fails to do at every give turn.
There is nothing terrible about this book, but it does aptly illustrate the problems an autodidact faces in trying to write a properly knowledgeable work about something (let alone everything under the sun).