Malcolm Stewart has discovered a remarkable geometrical device. The 'starcut diagram', as he has called it, is at first glance a simple way of dividing the area of a square. After extensive research, however, he found that it has extraordinary mathematical properties, suggesting that it may be no less than the source of the number system used when ancient humanity first built cities. He shows that the starcut diagram underlies many significant patterns and proportions across the world: in China, the shaman's dance; in Egypt, the Great Pyramid; in Europe, a Raphael fresco; in Asia, the Vedic Fire Altar, and many others. This book is an intellectual adventure, written for a general reader without specialist knowledge. Illustrated with around 180 photographs, drawings and diagrams, it tells the story of many fresh discoveries, bringing sacred geometry to life in an original and inspiring way.