History of the Peloponnesian War

The Lacedaemonians were also making ready for their invasion of Attica, both in accordance with their previous resolution and because the Syracusans and Corinthians urged it, when they heard of the reinforcements to be sent from the Athenians to Sicily, so that, as they said, these might be wholly prevented by the invasion. And Alcibiades was likewise insistently telling them that they should fortify Deceleia and not relax their efforts in the war.

But most important of all was the fact that a degree of confidence had come to the Lacedaemonians, because they believed that the Athenians, once they had on their hands a twofold war—with themselves and with the Siceliots—would be more easily overthrown, and because they regarded the Athenians as having been the first to break the treaty. In the former war[*](The Archidamian War, or the first decade of the Peloponnesian War.) they felt that the transgression had been rather on their own part; for the Thebans had entered Plataea in time of truce,[*](cf. 2.2.1.) and, although it had been stipulated in the former agreements[*](Referring to Thirty Years' Truce; cf. 1.115.1.) that neither party was to resort to arms if the other were willing to submit the question to arbitration, yet they themselves refused to respond to the summons when the Athenians invited them to arbitrate. On this account they considered that they deserved their misfortune, having in mind both the disaster at Pylos[*](iv. 26-41.) and any other that had befallen them.

But now the Athenians, setting out from Argos with thirty ships,[*](cf. 1.) had ravaged a part of Epidaurus and Prasiae and other places, and at the same time were making predatory excursions from Pylos; and as often as differences arose about any of the points of dispute in the treaty and the Lacedaemonians proposed arbitration, they were unwilling to resort to it; at this time, therefore, the Lacedaemonians, considering that the unlawful conduct, of which they had themselves formerly been guilty, had shifted round and now rested upon the Athenians, were zealous for the war.

And during this winter they sent out requisitions for iron to their allies, and in general were making ready the tools needed in the fortification of Deceleia. And at the same time they were not only devising on their own part ways and means for sending reinforcements in merchant-ships to the army in Sicily, but were also compelling the rest of the Peloponnesians to do likewise. So the winter ended, and with it the eighteenth year of this war of which Thucydides wrote the history.