The thinkers of ancient Egypt Greece & India recognized that numbers governed much of what they saw in their world & hence provided an approach to its divine creator. Robert Lawlor sets out the system that determines the dimension & the form of both man-made & natural structures from Gothic cathedrals to flowers from music to the human body. By also involving the reader in practical experiments he leads with ease from simple principles to a grasp of the logarithmic spiral the Golden Proportion the squaring of the circle & other ubiquitous ratios & proportions. Art & Imagination These large-format gloriously-illustrated paperbacks cover Eastern & Western religion & philosophy including myth & magic alchemy & astrology. The distinguished authors bring a wealth of knowledge visionary thinking & accessible writing to each intriguing subject.