History of the Peloponnesian War

After he had settled everything in the assembly, and the Athenians had voted him the command of the expedition, he chose as his colleague Demosthenes, one of the generals at Pylos, and pushed forward the preparations for his voyage.

His choice fell upon Demosthenes because he heard that he was contemplating a descent on the island; the soldiers distressed by the difficulties of the position, and rather besieged than besiegers, being eager to fight it out, while the firing of the island had increased the confidence of the general.