Plato

Plato was an ancient Greek philosopher living some three to four hundred years before Christ. Born to a wealthy and influential Athenian family, he was a student of Socrates. But he also would have been carefully taught in mathematics, music, gymnastics and grammar by the foremost scholars of his age. Music was a very different study then. The ancient Greeks had a form of musical notation, and they were aware of the mathematical rules governing harmony and dissonance. They used seven modes, which they named after Greek clans: Mixolydian, Lydian, Phrygian, Dorian, Hypolydian, Hypophrygian,  and Locrian. Each one was thought to engender or enhance a different mood in the listener, which sort of gives more meaning to the above quote. Another Plato quote that I like is, “One of the penalties for refusing to participate in politics is that you end up being governed by your inferiors.”