"Is there a secret visual language all around us? What is so very special about the shape of the Great Pyramid? How many ways can you tile the plane? Why is there something so sixy about circles? Lavishly illustrated by the author, this small and enchanting introduction to one of the oldest and most widely-used ancient traditions on Earth will forever change the way you look at a triangle, arch, window, fabric pattern, ceramic tiling, graphic design, painting, spiral, or flower."--Back cover.