History of the Peloponnesian War

For it lieth so conveniently for sailing into Italy and Sicily that it can both prohibit any fleet to come to Peloponnesus from thence and convoy any coming from Peloponnesus thither, and is also for divers other uses most commodious.

And to comprehend all in brief, consider whether we be to be abandoned or not by this. For Greece having but three navies of any account, yours, ours, and that of Corinth, if you suffer the other two to join in one by letting the Corinthians first seize us, you shall have to fight by sea at one time both against the Corcyraeans and the Peloponnesians; whereas by making league with us, you shall, with your fleet augmented, have to deal against the Peloponnesians alone.

Thus spake the Corcyraeans, and after them the Corinthians, thus: