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.

for to those who have never given them aid according to the terms of their alliance they of their own accord have fulfilled an ally's obligations with a zeal exceeding their compact. That the Athenians entertain these designs of aggrandisement is quite pardonable;

and I have no word of blame for those who wish to rule, but only for those who are too ready to submit; for it is an instinct of man's nature always to rule those who yield, but to guard against those who are ready to attack.

If any of us, knowing how matters really stand, fails to take proper precautions, or if anyone has come here not accounting it of paramount importance that we must all together deal wisely with the common peril, we are making a mistake. The speediest relief from this peril would be gained by our entering into an understanding with one another;