"And yet it has just eaten from my hands!" he said, in response to being told Rome had fallen. He had a chicken named Rome, and was greatly relieved to hear it was the city rather than the fowl that had fallen.
"Molon Labe" (Come and take them) said in response to the Persian demand that he lay down his arms at Thermopylae.
"So would I, if I were Parmenio" said when his general Parmenio said, if he were Alexander, he would accept Darius' offer of an alliance and half his empire.
"Veni, vidi, vici." (I came, I saw, I conquered). This was not said in Britain, but in reference to his rapid defeat of Pharnaces in Asia Minor.
Lycurgus on democracy
"Begin with your own family" in response to a proposal to make Sparta a democracy.
"If" was their concise response to Philip II's threat to destroy their farms, slay their people and raze Sparta if it did not submit and he defeated them. Subsequently Philip II and Alexander avoided Sparta.
"O tempora, o mores!" (O, the times, O, the customs!) Cicero bewails the decline in morality of the youth of today (in 63BC).
"To ravage, to slaughter, to usurp under false titles, they call empire; and where they make a desert, they call it peace" is a bleak yet telling description of Rome's endless appetite for conquest, attributed to a chieftain.
"He will have true glory who despises it" from Book XXII. A shame modern politicians seem unfamiliar with it.