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.
"It is for this reason that I have dwelt upon the greatness of our city; for I have desired to show you that we are contending for a higher prize than those who do not enjoy such privileges in like degree, and at the same time to let the praise of these men in whose honour I am now speaking be made manifest by proofs.
Indeed, the greatest part of their praise has already been spoken; for when I lauded the city, that was but the praise wherewith the brave deeds of these men and men like them have already adorned her; and there are not many Hellenes whose fame would be found, like theirs, evenly balanced with their deeds. And it seems to me that such a death as these men died gives proof enough of manly courage, whether as first revealing it or as affording its final confirmation.