The quadrivium--the classical curriculum--comprises the four liberal arts of number, geometry, music, and cosmology. It was studied from antiquity to the Renaissance as a way of glimpsing the nature of reality. Geometry is number in space; music is number in time; and comology expresses number in space and time. Number, music, and geometry are metaphysical truths: life across the universe investigates them; they foreshadow the physical sciences. Quadrivium...

"In this beautiful little book, researcher Hugh Newman explores the science and history of Earth Grids, from Ancient Chinese medicine to the invention of longitude and latitude straight through to our current electrical system..."--goodreads.