Indeed, what sets A Brief History of Everything apart both from Spectrum and from Wilber’s eleven subsequent books is that it not only extends the ideas advanced in those earlier works, but presents them now in a simple, accessible, conversational format. Most of Wilber’s books require at least some knowledge of the major Eastern contemplative traditions and of Western developmental psychology. A Brief History is addressed to a much broader audience—those of us grappling to find wisdom in our everyday lives, but bewildered by the array of potential paths to truth that so often seem to contradict one another—and to fall short in fundamental ways. For those readers who want still more when they finish this book, I recommend Wilber’s recent opus, Sex, Ecology, Spirituality, which explores many of the ideas here in more rigorous detail.