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The Quadrivium consists of the four Liberal Arts of Number, Geometry, Music, and Cosmology, studied from antiquity to the Renaissance as a way of glimpsing the nature of reality. They synthesize number, space, and time. Geometry is number in space, music is number in time, and the cosmos expresses number in space and time. Number, music, and geometry are metaphysical truths, good and beautiful everywhere at all times. Life across the universe investigates them. They foreshadow the physical sciences. This is the first volume to bring together the Quadrivium for many hundreds of years. "Music to the eye" - The New York Times. "Fascinating" - Financial Times. "Excellent" - New Scientist. "Genuinely mind-expanding" - Fortean Times. "Engaging and accessible" - Seattle Times. "Beautiful" - London Review of Books. "Rich and artful" - The Lancet.

Quadrivium: The Four Classical Liberal Arts of Number, Geometry, Music and Cosmology