It is wise to be silent when occasion requires, and better than to speak, though never so well.
PlutarchI don't need a friend who changes when I change and who nods when I nod; my shadow does that much better.
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.
Plutarch