History of the Peloponnesian War

Be convinced then that we shall augment our power at home by this adventure abroad, and let us make the expedition, and so humble the pride of the Peloponnesians by sailing off to Sicily, and letting them see how little we care for the peace that we are now enjoying; and at the same time we shall either become masters, as we very easily may, of the whole of Hellas through the accession of the Sicilian Hellenes, or in any case ruin the Syracusans, to the no small advantage of ourselves and our allies.

The faculty of staying if successful, or of returning, will be secured to us by our navy, as we shall be superior at sea to all the Siceliots put together.