Nothing more completely baffles one who is full of trick and duplicity than straigthforward and simple integrity in another. A knave would rather quarrel with a brother knave than with a fool, but he would rather avoid a quarrel with one honest man than with both. He can combat a fool by management and address, and he can conquer a knave by temptations. But the honest man is neither to be bamboozled nor bribed.

Remarks on the Talents of Lord Byron and the Tendencies of Don Juan (ed. 1823)