History of the Peloponnesian War
Thucydides
Thucydides. History of the Peloponnesian War. Crawley, Richard, translator. London and Toronto: J. M. Dent and Sons Ltd.; New York: E. P. Dutton and Co., 1914.
Meanwhile, as they knew that the Athenians were wintering at Naxos, they marched with all their people to Catana, and ravaged the land and set fire to the tents and encampment of the Athenians, and so returned home.
Learning also that the Athenians were sending an embassy to Camarina, on the strength of the alliance concluded in the time of Laches, to gain, if possible, that city, they sent another from Syracuse to oppose them. They had a shrewd suspicion that the Camarinaeans had not sent what they did send for the first battle very willingly; and they now feared that would refuse to assist them at all in future, after seeing the success of the Athenians in the action, and would join the latter on the strength of their old friendship.