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.

And lie said that he was well aware that the Syracusans, by daring unexpectedly to make a stand against the Athenian fleet, would have an advantage over them, dismayed as they would be on that account, which would more than outweigh the damage which the Athenians might inflict by their skill on the inexperience of the Syracusans.

He urged them, therefore, to proceed to the trial of their fleet and not to shrink from it. So the Syracusans, under the persuasions of Gylippus, Hermocrates, and perhaps others, were eager for the sea-fight and began to man the slips.