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 we are lovers of beauty yet with no extravagance and lovers of wisdom yet without weakness. Wealth we employ rather as an opportunity for action than as a subject for boasting; and with us it is not a shame for a man to acknowledge poverty, but the greater shame is for him not to do his best to avoid it.
And you will find united in the same persons an interest at once in private and in public affairs, and in others of us who give attention chiefly to business, you will find no lack of insight into political matters. For we alone regard the man who takes no part in public affairs, not as one who minds his own business, but as good for nothing; and we Athenians decide public questions for ourselves[*](As contrasted with the Spartans, whose officials made the most important decisions.) or at least endeavour to arrive at a sound understanding of them, in the belief that it is not debate that is a hindrance to action but rather not to be instructed by debate before the time comes for action.