The music masters familiarize children's minds with rhythms and melodies, thus making them more civilized, more balanced, better adjusted in themselves, and more capable in whatever they say or do, for rhythm and harmony are essential to the whole of life.
... the community suffers nothing very terrible if its cobblers are bad and become degenerate and pretentious; but if the Guardians of its laws and constitution, who alone have the opportunity to bring it good government and prosperity, become a mere sham, then clearly it is completely ruined.
Is it not the excess and greed of this and the neglect of all other things that revolutionizes this constitution too and prepares the way for the necessity of a dictatorship?
for a poet is a light and winged thing, and holy, and never able to compose until he has become inspired, and is beside himself, and reason is no longer in him.
For when there are no words, it is very difficult to recognize the meaning of the harmony and rhythm, or to see any worldly object is imitated by them.
Only a philosopher's mind grows wings, since its memory always keeps it as close as possible to those realities by being close to which the gods are divine.
The good are like one another, and friends to one another; and ... the bad, as is often said of them, are never at unity with one another or with themselves, but are passionate and restless: and that which is at variance and enmity with itself is not likely to be in union or harmony with any other thing.
No one punishes the evil-doer under the notion, or for the reason, that he has done wrong -- only the unreasonable fury of a beast acts in that way. But he who desires to inflict rational punishment does not retaliate for a past wrong, for that which is done cannot be undone, but he has regard to the future, and is desirous that the man who is punished, and he who sees him punished, may be deterred from doing wrong again.
Arithmetic has a very great and elevating effect, compelling the soul to reason about abstract number, and rebelling against the introduction of visible or tngible objects into the argument.