Book 2.23

Everyone knows the story of the tyrannicide who, being caught before he had accomplished his task, and being tortured by Hippias to make him betray his accomplices, named the friends of the tyrant who stood around, and everyone to whom he knew the tyrant's safety was especially dear. As the tyrant ordered each man to be slain as he was named, at last the man, being asked if anyone else remained, said, "You remain alone, for I have left no one else alive to whom you are dear." Anger had made the tyrant lend his assistance to the tyrant-slayer, and cut down his guards with his own sword. How far more spirited was Alexander, who after reading his mother's letter warning him to beware of poison from his physician, Philip, nevertheless drank undismayed the medicine which Philip gave him! He felt more confidence in his friend: he deserved that his friend should be innocent, and deserved that his conduct should make him innocent. I praise Alexander's doing this all the more because he was above all men prone to anger; but the rarer moderation is among kings, the more it deserves to be praised. The great Gaius Caesar, who proved such a merciful conqueror in the civil war, did the same thing; he burned a packet of letters addressed to Gnaeus Pompeius by persons who had been thought to be either neutrals or on the other side. Though he was never violent in his anger, yet he preferred to put it out of his power to be angry: he thought that the kindest way to pardon each of them was not to know what his offence had been.