Quadrivium : The Four Classical Liberal Arts of Number, Geometry, Music, & Cosmology (Wooden Books)
Quadrivium Previously published as: Sacred geometry. 2001. Full description
Investigates the metaphysical truths of the quadrivium, the classical curriculum which consisted of the liberal arts of number, geometry, music and cosmology, and argues that the ancient methods of studying the interconnectedness of the universe are still applicable today.