History of the Peloponnesian War

In the meantime it was determined by the boeotarchs and the Corinthians, the Megarians, and the envoys from Thrace, first, to bind themselves by oaths one to another, that assuredly when occasion offered they would assist the one that needed help and would not go to war with anyone or make peace without a common agreement; and that then and only then the Boeotians and the Megarians—for they were acting in concert[*](cf. 5.31.6.)— should make a treaty with the Argives.

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.