History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
But before the oaths were sworn the boeotarchs communicated these resolutions to the four councils of the Boeotians which have supreme authority, and recommended that oaths be exchanged with such cities as wished to take oaths with them for mutual assistance.
But the members of the Boeotian council did not accept the proposal, fearing that they might offend the Lacedaemonians by taking oaths with the Corinthians who had seceded from their confederacy. For the boeotarchs did not tell them what had happened at Lacedaemon—that it was the ephors, Cleobulus and Xenares, and their own friends who advised them first to become allies of the Argives and Corinthians, and then in conjunction with these to become allies of the Lacedaemonians; for they thought that the council,[*](The four councils here doubtless considered as one body.) without their making any such statement, would not vote for any other course than that which they had previously resolved upon and now recommended.
But now, when this difficulty arose, the Corinthians and the envoys from Thrace went away without accomplishing their purpose; and the boeotarchs, who had before intended, if they carried these measures, to try to effect also the alliance with the Argives, did not now bring before the councils the matter concerning the Argives, nor did they send to Argos the envoys they had promised; and there was neglect and delay in the whole business.
In the course of this same winter, the Olynthians by a sudden attack captured Mecyberna[*](A port town of Olynthus; cf. 5.18.7.) which was garrisoned by the Athenians.
After this, while conferences were continually going on between the Athenians and Lacedaemonians about places belonging to one or the other which they respectively held, the Lacedaemonians, in the hope that, if the Athenians should get back Panactum from the Boeotians, they themselves might recover Pylos, sent envoys to the Boeotians and begged them to deliver up Panactum and the Athenian prisoners to themselves, in order that they might recover Pylos in exchange for these.
But the Boeotians refused to give them up, unless they would make a separate alliance with them just as with the Athenians. Now the Lacedaemonians knew that they would thereby be wronging the Athenians, inasmuch as it was stipulated not to make either peace or war with anyone without mutual consent, yet they wished to obtain Panactum in order to recover Pylos in exchange for it. Besides, the party that was eager to break the treaty was zealous for the connection with the Boeotians. So they concluded the alliance, when the winter was closing and the spring at hand; and the demolition of Panactum was immediately begun. So ended the eleventh year of the war.
At the very beginning of the following[*](March, 420 B.C.) summer, when the envoys whom the Boeotians promised to send did not come, the Argives, perceiving that Panactum was being demolished and a private alliance had been made by the Boeotians with the Lacedaemonians, began to fear that they would be left alone and the whole confederacy would go over
to the Lacedaemonians. For they thought that the Boeotians had been persuaded by the Lacedaemonians to raze Panactum and to accede to the treaty with the Athenians, and that the Athenians knew these things, so that it was no longer possible for them to make an alliance even with the Athenians; whereas they had formerly hoped that if their treaty with the Lacedaemonians should not continue they might at any rate, in consequence of the differences,[*](ie. of the Lacedaemonians and Athenians.) become allies