People regard the same things, some as just and others as unjust, - about these they dispute; and so there arise wars and fightings among them.
A wise ignorance is an essential part of knowledge.
If one has made a mistake, and fails to correct it, one has made a greater mistake.
Music is the movement of sound to reach the soul for the education of its virtue.
That man is wisest who, like Socrates, realizes that his wisdom is worthless
Those who have a natural talent for calculation are generally quick-witted at every other kind of knowledge; and even the dull, if they have had an arithmetical training, although they may derive no other advantage from it, always become much quicker than they would have been.