A fascinating, well-researched, and brilliant account of the Hermetic-alchemical tradition from its origins in the Hellenistic-Egyptian mythology, continued through the Gnostic movements of the early centuries CE, the Islamic Golden Age, the European Renaissance, and culminating in the German myth of the Rosicrucian fraternity and the subsequent development of "speculative" (as opposed to "operative", mostly a spurious distinction) Freemasonry in the 17th and 18th cc. The stuff of many legends, misunderstandings, conspiracy theories, vilification, this tradition of building a metaphorical and spiritual cathedral or temple from the base elements of one's everyday life deserves to be understood accurately. Pursuit of experiential, embodied knowledge (~gnosis) of both self and the world is the eternal quest for building a meaningful life in the here and now.