Institutio Oratoria

There can in any case be no doubt that some of those men whose wisdom is a household word have been earnest students of music: Pythagoras for instance and his followers popularised the belief, which they no doubt had received from earlier teachers, that the universe is constructed on the same principles which were afterwards imitated in

the construction of the lyre, and not content merely with emphasising that concord of discordant elements which they style harmony attributed a sound to the motions of the celestial bodies. [*]( The music of the spheres: cp. the vision of Er in Plato ( Rcp. 10) and the Somnium Scipionis of Cicero. The sounds produced by the heavenly bodies correspond to the notes of the heptachord. )