The great thieves lead away the little thief.
Aristotle was once asked what those who tell lies gain by it. Said he - That when they speak truth they are not believed.
Boasting, like gilded armour, is very different inside from outside.
I am looking for an honest man.
As a matter of self-preservation, a man needs good friends or ardent enemies, for the former instruct him and the latter take him to task.
Of what use is a philosopher who doesn't hurt anybody's feelings?