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.
"But through timidity, perhaps, you will make much of the point of right as between us and the invaders, alleging that you have an alliance with the Athenians. That alliance, however, you made, not against your friends, but in the event of any of your enemies attacking you; and you were to aid the Athenians only when they were wronged[*](ἀδικῶνται is said to be understood. For similar ellipses, cf. 2.11.34; 7.69.3.) by others, and not when, as now, they are themselves wronging their neighbours.
Why, not even the Rhegians, themselves Chalcidians, are willing to help to restore the Leontines who are Chalcidians. And it is monstrous if they, suspicious of what this fine plea of right really means in practice, are unreasonably prudent,[*](ie. discard logic and obey policy.) while you, on a speciously reasonable pretext, desire to aid those who by nature are your enemies, and in concert with your bitterest foes to ruin those who by a still closer tie of nature are your kinsmen.[*](As Dorians and Sicilians.) Nay, that is not right;