“So, Glaucon,” I said, “isn’t this why the rearing in music is most sovereign? Because rhythm and harmony most of all insinuate them- selves into the inmost part of the soul and most vigorously lay hold of it in bringing grace with them; and they make a man graceful if he is cor- rectly reared, if not, the opposite. Furthermore, it is sovereign because the man properly reared on rhythm and harmony would have the sharpest sense for what’s been left out and what isn’t a fine product of craft or what isn’t a fine product of nature. And, due to his having the right kind of dislikes, he would praise the fine things; and, taking pleasure in them and receiving them into his soul, he would be reared on them and become a gentleman”.

Platon (The Republic, III, 401 e)