History of the Peloponnesian War

Such were the words of Alcibiades. The Lacedaemonians, who had themselves before intended to march against Athens, but were still waiting and looking about them, at once became much more in earnest when they received this particular information from Alcibiades, and considered that they had heard it from the man who best knew the truth of the matter.

Accordingly they now turned their attention to the fortifying of Decelea and sending immediate aid to the Sicilians; and naming Gylippus, son of Cleandridas, to the command of the Syracusans, bade him consult with that people and with the Corinthians and arrange for succors reaching the island, in the best and speediest way possible under the circumstances.