Essais de Michel de Montaigne, volume 14

This does not concern me; mine slip from me with as little care as they are of little value, and 'tis the better for them. I would presently part with them for what they are worth, and neither buy nor sell them, but as they weigh. I speak on paper, as I do to the first person I meet; and that this is true, observe what follows. To whom ought not treachery to be hateful, when Tiberius refused it in a thing of so great importance to him? He had word sent him from Germany that if he thought fit, they would rid him of Arminius by poison: this was the most potent enemy the Romans had, who had defeated them so ignominiously under Varus, and who alone prevented their aggrandisement in those parts. He returned answer, "that the people of Rome were wont to revenge themselves of their enemies by open ways, and with their swords in their hands, and not clandestinely and by fraud": wherein he quitted the profitable for the honest. You will tell me that he was a braggadocio; I believe so too: and 'tis no great miracle in men of his profession. But the acknowledgment of virtue is not less valid in the mouth of him who hates it, forasmuch as truth forces it from him, and if he will not inwardly receive it, he at least puts it on for a decoration.…