One ought not to return injustice, nor do evil to anybody in the world, no matter what one may have suffered from them.
Be true to thine own self.
How can you wonder your travels do you no good, when you carry yourself around with you?
Regard your good name as the richest jewel yoou can possibly be possessed of.
Nobody is qualified to become a statesman who is entirely ignorant of the problem of wheat.
Nothing is to be preferred before justice.