Seek truth while you are young, for if you do not, it will later escape your grasp
Ignorance, the root and the stem of every evil.
The deity on purpose [sings] the liveliest of all lyrics through the most miserable poet.
Rhythm and melody enter into the soul of the well-instructed youth and produce there a certain mental harmony hardly obtainable in any other way. . . . thus music, too, is concerned with the principles of love in their application to harmony and rhythm.
Discordance is evil. Harmony is virtue.
The only real ill-doing is the deprivation of knowledge.