Latin
Lines 1.3-1.5
Greek and Roman Historians, The Peloponnesian War 1.3-5
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Reactions to all this, within the empire and outside it, are hard to gauge. Athens' savage reduction of Samos, a member of the Delian League, in 440-439, did not stop Mytilene and most of Lesbos from appealing at some time in the prewar period to Sparta for encouragement in a revolt they were meditating. No encouragement was given: Sparta was standing by the Thirty Years' Peace and should be given (a little) credit for doing so.
For the period from 443 to 411 a vastly more detailed narrative is possible than theretofore, but the reader should be warned that this freak of scale is due to one man, Thucydides, who imposed his view of events on posterity. It would, however, be artificial to write as if the information for this unique period were no better than that available for any other.
The main precipitating causes of the war, thought of as a war between Athens and Sparta, actually concerned relations between Sparta's allies (rather than Sparta itself) and other smaller states with Athenian connections. The two "causes" that occupy the relevant parts of Thucydides' first, introductory book concern Corcyra and Potidaea. (Thucydides does not let his readers entirely lose sight of two other causes much discussed at the time -the Megarian decrees and the complaints of Aegina about its loss of autonomy. One 4th-century Athenian orator actually dropped a casual remark to the effect that "we went to war in 431 about Aegina.") Corcyra, which had quarreled with Corinth over the Corcyran colony of Epidamnus on the coast of Illyria (a colony in which Corinth also had an interest), appealed to Athens. Taking very seriously the western dimension to its foreign policy (it was about then that the alliances with Rhegium and Leontini were renewed), Athens voted at first for a purely defensive alliance and after a debate, fully recorded by Thucydides, sent a small peace-keeping force of 10 ships. This was, however, trebled, as a nervous afterthought; no political background is given for this move, which, moreover, emerges only subsequently and in passing during the narrative of events concerning Corcyra itself. (This is a small illustration of the important point that Thucydides' presentation unduly influenced modern views on the general issue of Athenian belligerence, as on so many other issues. A different narrative, by emphasizing the escalation of the Athenian commitment and making it the subject of another full debate, might have left a different impression.) In fact, Corinthian and Athenian ships had already come to blows before the reinforcements arrived.