I found this book to be very helpful in organizing and clarifying my thinking about my spiritual practice in two ways. First, Grimassi emphasizes the advantages of following a tradition with his concept of the Momentum of the Past. That is, over the centuries the beliefs and practices of past generations have created an "eitheric pathway" (my term) that eases access to, and enhances the spiritual power of those that follow it. A scientific equivalent to this concept is that of morphogenic fields, from the biologist, Rupert Sheldrake, in his book "The Presence of the Past". Grimassi delineates the essential points of the tradition using his tradition as an example. It takes some effort and thought to connect a personal eclectic practice to his tradition, but then, I consider that the fun part. Secondly, Grimassi's delineation of the essential points of a tradition is very clear and well laid out. A personal practice can easily be compared to his to see any differences. For following a tradition makes it easier to see where my practice may be unbalanced or where I have blind spots. Over centuries a tradition builds a wisdom that is impossible to put into words. Also a tradition includes parts of the human psyche that I would much rather not look at in myself. That is why so much of the New Age is shallow and ephemeral. People take a little of this because a friend said it is so spiritual, and a little of that because it's "cute". And soon you have a lot of nothing, a hodgepodge of odds and ends, a vanilla pudding of empty spiritual calories. Now if you think tradition is irrelevant and oppressive, then I would not buy this book. But if you are willing to look deeper at what the past has to say, then I would highly recommend it. Yes, it duplicates a lot of material from his earlier books, but the emphasis is different. It stands alone on its own merit.