History of the Peloponnesian War

It must be thoroughly understood that war is a necessity; but that the more readily we accept it, the less will be the ardour of our opponents, and that out of the greatest dangers communities and individuals acquire the greatest glory.

Did not our fathers resist the Medes not only with resources far different from ours, but even when those resources had been abandoned; and more by wisdom than by fortune, more by daring than by strength, did not they beat off the barbarian and advance their affairs to their present height? We must not fall behind them, but must resist our enemies in any way and in every way, and attempt to hand down our power to our posterity unimpaired.’

Such were the words of Pericles. The Athenians, persuaded of the wisdom of his advice, voted as he desired, and answered the Lacedaemonians as he recommended, both on the separate points and in the general; they would do nothing on dictation, but were ready to have the complaints settled in a fair and impartial manner by the legal method, which the terms of the truce prescribed. So the envoys departed home, and did not return again.

These were the changes and differences existing between the rival powers before the war, arising immediately from the affair at Epidamnus and Corcyra. Still intercourse continued in spite of them, and mutual communication. It was carried on without heralds, but not without suspicion, as events were occurring which were equivalent to a breach of the treaty and matter for war.

The war between the Athenians and Peloponnesians and the allies on either side now really begins. For now all intercourse except through the medium of heralds ceased, and hostilities were commenced and prosecuted without intermission. The history follows the chronological order of events by summers and winters.

The thirty years' truce which was entered into after the conquest of Euboea lasted fourteen years. In the fifteenth, in the forty-eighth year of the priestess-ship of Chrysis at Argos, in the Ephorate of Aenesias at Sparta, in the last month but two of the Archonship of Pythodorus at Athens, and six months after the battle of Potidaea, just at the beginning of spring, a Theban force a little over three hundred strong, under the command of their Boeotarchs, Pythangelus, son of Phyleides, and Diemporus, son of Onetorides, about the first watch of the night, made an armed entry into Plataea, a town of Boeotia in alliance with Athens.

The gates were opened to them by a Plataean called Naucleides, who, with his party, had invited them in, meaning to put to death the citizens of the opposite party, bring over the city to Thebes, and thus obtain power for themselves.