History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
“We have discussed these matters at length, Lacedaemonians, both for your sakes and our own, in order that you, for your part, may know that you will justly condemn them, and we that we have still more righteously exacted vengeance.
And let not your hearts be softened when you hear them speak of their ancient virtues, if indeed they ever had any; for virtues might well be a succour to the victims of wrong, but should bring a two-fold penalty upon the authors of a shameful deed, because their offence is out of keeping with their character. And let not their lamentation and pitiful wailing avail them, nor their appeals to the sepulchres of your fathers and their own desolate state.
For in answer we too would point out that a far more dreadful fate befell our young men who were butchered by them, of whose fathers some died at Coronea[*](As at 3.62.5, a reminder flattering to the Lacedaemonians.) trying to win Boeotia to your cause, while others, left desolate at home in their old age, with far greater justice make supplication to you to take vengeance upon these men.
Pity is more worthily bestowed upon those who suffer an unseemly fate, but those who, like these Plataeans, deserve their fate afford on the contrary a subject for rejoicing.
As for their present desolation, that also is their own fault; for of their own free will they rejected the better alliance. They acted unlawfully without having received provocation at our hands, but through hatred rather than according to a just judgment, and they could not possibly pay now a penalty equal to their guilt, for they will suffer a lawful sentence; and they are not, as they claim,[*](cf. 3.58.3.) stretching out suppliant hands on the field of battle, but have delivered themselves up to justice under formal agreement.