History of the Peloponnesian War

At the time that the Argives were in Epidaurus, deputations from the states assembled at Mantinea, on the invitation of the Athenians. And when the conference began, the Corinthians said that their words did not agree with their deeds; since they were sitting in council on the subject of peace, while the Epidaurians with their allies and the Argives were arrayed against each other under arms. Deputies therefore from each party ought first to go and separate the armies, and then come and speak again on the subject of peace.