History of the Peloponnesian War

And those things which concerning former time there went a fame of, but in fact rarely confirmed, were now made credible: as earthquakes, general to the greatest part of the world and most violent withal; eclipses of the sun oftener than is reported of any former time; great droughts in some places, and thereby famine; and that which did none of the least hurt but destroyed also its part, the plague.

All these evils entered together with this war, which began from the time that the Athenians and Peloponnesians brake the league which immediately after the conquest of Euboea had been concluded between them for thirty years.