History of the Peloponnesian War

The Lacedaemonian state was encouraged by all these things, and most of all, because their allies in Sicily, since their navy had now of necessity been added to their resources, would in all probability be with them in great force with the spring.

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.