History of the Peloponnesian War

Thucydides

Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.

And it was no equal return of favour that you made them, nor one free from disgrace. For you introduced them, as you say, when you were being injured; but you became co-operators with them in injuring others. And yet not to return equal favours is more disgraceful than to fail in those which, though justly due, will be returned in furtherance of injustice.

"You showed then plainly, that not even at that time was it for the sake of the Greeks that you alone did not Medize, but because the Athenians did not either, and because you wished to side with them, and against the rest.