Madness comes from God, whereas sober sense is merely human.
If someone separated the art of counting and measuring and weighing from all the other arts, what was left of each (of the others) would be, so to speak, insignificant.
No man should be angry with what is true.
Knowledge is true opinion.
Train children not by compulsion but as if they were playing.
There is yet something remaining for the dead, and some far better thing for the good than for the evil.