History of the Peloponnesian War
Thucydides
Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.
And thus being on every account full of hope, they determined to devote themselves unflinchingly to the war, reckoning that by its successful termination they would both be released in future from all dangers, like that which would have encompassed them from the Athenians, if they had won Sicily in addition to their other dominion; and that, after subduing them, they would themselves then enjoy n safety the supremacy over the whole of Greece.
Agis, their king, set out therefore immediately, during his winter, with some troops from Decelea, and levied from the allies contributions for their fleet; and having turned in the direction of the Malian gulf, and carried off, on the ground of their long-standing enmity, the greater part of the exposed property of the Oetaeans, he exacted money for the ransom of it; and also compelled the Achaeans of Pthiotis, and the other subjects of the Thessalians thereabouts, (though the Thessalians remonstrated with him, and objected to it,) to give both hostages and money; the former of which he deposited at Corinth, and endeavoured to bring their countrymen over to the confederacy.
The Lacedaemonians also issued to the states a requisition for building a hundred ships, fixing their own quota and that of the Boeotians at five and twenty each; that of the Phocians and Locrians together at fifteen; that of the Corinthians at fifteen; that of the Arcadians, Pellenians, and Sicyonians, at ten; and that of the Megareans, Troezenians, Epidaurians, and Hermionians at ten. They were also making all other preparations, with the intention of proceeding immediately to war at the very commencement of spring.
The Athenians too, as they had determined, were preparing during this same winter for building ships; having contributed towards the supply of timbers, and fortified Sunium, that their corn-ships might have a safe passage round; while they also evacuated the fort in Laconia, which they had built in that country when they were sailing by it for Sicily; and with a view to economy retrenched all their other expenses, whatever any where appeared to be useless expenditure; and, above all, kept their eye on the allies, to prevent their revolting from them.
While both parties were carrying out these measures, and engaged in preparation for the war, just as when they were commencing it, the Euboeans, first of all, sent during this winter an embassy to Agis, to treat of their revolting from the Athenians. He acceded to their proposals, and sent for Alcamenes son of Sthenelaidas, and for Melanthus, to come from Sparta and take the command in Euboea. Accordingly they came with about three hundred of the Neodamodes, and he began to prepare for their crossing over.