History of the Peloponnesian War

and neither to make peace nor carry on war with any, except conjointly. And besides conducting their other measures with vehemence, they both of them sent ambassadors to the Thrace-ward towns, and to Perdiccas, whom they persuaded to join their league. He did not, however, immediately separate from the Athenians, but purposed doing so, because he saw that the Argives had also; for he himself was originally from Argos. They likewise renewed their former oaths with the Chalcidians, and bound themselves by new ones.