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 belongs to me more than to others, Athenians, to have command—for I must needs begin with this, since Nicias has attacked me—and I think, too, that I am worthy to command. For those things for which I am railed at bring glory to my ancestors and myself, as well as advantage to my country.
For the Hellenes, who had previously hoped that our state had been exhausted by the war, conceived an idea of its greatness that even transcended its actual power by reason of the magnificence of my display as sacred deputy at Olympia,[*](Probably 416 B.C.; though Thirlwall assumes 424, Grote 420.) because I entered seven chariots, a number that no private citizen had ever entered before, and won the first prize and the second and the fourth, and provided everything else in a style worthy of my victory. For by general custom such things do indeed mean honour, and from what is done men also infer power.