History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
On the mainland also men plundered one another; and even to-day in many parts of Hellas life goes on under the old conditions, as in the region of the Ozolian Locrians, Aetolians, Acarnanians, and the mainland thereabout. And these mainlanders' habit of carrying arms is a survival of their old freebooting life.