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.
But suddenly the Syracusans manned their ships and again sailed against them; whereupon the Athenians, in great confusion and most of them without food, embarked in disorder and at last with much ado got under weigh.
For some time they held off from one another, keeping on their guard; but after a while the Athenians thought it unwise, by further delay, to exhaust themselves with fatigue by their own act, and decided to attack as quickly as possible, and accordingly bore down upon the enemy and with a cheer began the fight.