No trace of slavery ought to mix with the studies of the freeborn man. No study, pursued under compulsion, remains rooted in the memory.
If there is no contradictory impression, there is nothing to awaken reflection
There should exist among the citizens neither extreme poverty nor again excessive wealth, for both are productive of great evil.
Music is a more potent instrument than any other for education.
When the music changes, the walls of the city shake.
You must base the Wisdom on Love.