Whenever anything is spoken against you that is not true, do not pass by or despise it because it is false; but forthwith examine yourself, and consider what you have said or done that may administer a just occasion of reproof.
PlutarchDemosthenes, when taunted by Pytheas that all his arguments "smelled of the lamp," replied, "Yes, but your lamp and mine, my friend, do not witness the same labours.
PlutarchIf you light upon an impertinent talker, that sticks to you like a bur, to the disappointment of your important occasions, deal freely with him, break off the discourse, and pursue your business.
Plutarch