“The Pythagoreans... were fascinated by certain specific ratios, ...The Greeks knew these as the 'golden' proportion and the 'perfect' proportion respectively. They may well have been learned from the Babylonians by Pythagoras himself after having been taken prisoner in Egypt. Ratios lay at the heart of the Pythagorean theory of music.” NumbersMusicGolden RatioHistory Of MathematicsPythagoreans Book:Numbers: Their History and Meaning Source: Numbers: Their History and Meaning