Papus is after a ‘Theory of Everything’, and finds evidence for it in the Tarot and a set of correspondences with everything from the tetragrammaton to numerology and astrology. The Tarot pack of cards, transmitted by the Gypsies from generation to generation, is the primitive book of ancient initiation. The key to its construction and application has not yet been revealed. The reader will find the explanation of the lofty philosophy and science of ancient Egypt, and will be enabled to practise the use of the divining Tarot, by methods which have been rendered easy herein.