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.
The Athenians thereupon slew all the adult males whom they had taken and made slaves of the children and women. But the place they then peopled with new settlers from Athens, sending thither at a later time five hundred colonists.
During the same winter the Athenians wished to[*](416 B.C.) sail again to Sicily with a larger armament than that conducted by Laches and Eurymedon,[*](Two separate earlier expeditions, one under Laches and Charoeades, 427 B.C. (3.86.1), the other under Pythodorus. Sophocles and Eurymedon, 424 B.C. (4.2.), are here comprised under the one formula.) and subdue it, if they could, most of them being ignorant of the great size of the island and of the large number of its inhabitants, Hellenic as well as Barbarian, and that they were undertaking a war not very much inferior to that against
the Peloponnesians. For the voyage round Sicily, for a merchantman, is one of not much less than eight days; and although it is so large only a distance of about twenty stadia of the sea divides the island from the mainland.