History of the Peloponnesian War

The Grecians then, neither as they had that name in particular by mutual intercourse, nor after, universally so termed, did ever before the Trojan war, for want of strength and correspondence, enter into any action with their forces joined. And to that expedition they came together by the means of navigation, which the most part of Greece had now received.

For Minos was the most ancient of all that by report we know to have built a navy. And he made himself master of the now Grecian Sea, and both commanded the isles called Cyclades and also was the first that sent colonies into most of the same, expelling thence the Carians and constituting his own sons there for governors; and also freed the seas of pirates as much as he could, for the better coming in, as is likely, of his own revenue.

For the Grecians in old time, and such barbarians as in the continent lived near unto the sea or else inhabited the islands after once they began to cross over one to another in ships, became thieves and went abroad under the conduct of their most puissant men, both to enrich themselves and to fetch in maintenance for the weak, and falling upon towns unfortified and scatteringly inhabited, rifled them and made this the best means of their living, being a matter at that time nowhere in disgrace but rather carrying with it something of glory.