Thunder Perfect Gnosis-Intellectual Flower of Mind - Hardcoverby Oliver St John (Author) We here follow up points of special interest on Gnostic and other texts, including the remarkable Thunder Perfect Mind. Yoga and a science of the mind is implicit in all of them. Our interest is in metaphysical and universal symbolism; we are not overly concerned with factual references, names, dates and places. The surviving fragments of these ancient texts, as with the Yoga Sutras, have their true origins in times that