Note 5 — VI THE MUSIC OF GREECE

The fundamental doctrine of the Pythagorean philosophy was that the essence of all things rests upon musical relations, that numbers are the principle of all that exists, and that the world subsists by the rhythmical order of its elements. The doctrine of the “Harmony of the spheres” was based on the idea that the celestial spheres were separated from each other by intervals corresponding with the relative length of strings arranged so as to produce harmonious tones.