History of the Peloponnesian War

And so the stories of former times, handed down by oral tradition, but very rarely confirmed by fact, ceased to be incredible: about earthquakes, for instance, for they prevailed over a very large part of the earth and were likewise of the greatest violence; eclipses of the sun, which occurred at more frequent intervals than we find recorded of all former times; great droughts also in some quarters with resultant famines; and lastly- the disaster which wrought most harm to Hellas and destroyed a considerable part of the people—the noisome pestilence. For all these disasters fell upon them simultaneously with this war.

And the war began when the Athenians and Peloponnesians broke the thirty years' truce,[*](445 B.C.; cf. 115.1) concluded between them after the capture of Euboea.

The reasons why they broke it and the grounds of their quarrel I have first set forth, that no one may ever have to inquire for what cause the Hellenes became involved in so great a war.