Pausanias Description of Greece 2.8.6

[6] After his success in the Peloponnesus , Aratus thought it a shame to allow the Macedonians to hold unchallenged Peiraeus, Munychia, Salamis , and Sunium; but not expecting to be able to take them by force he bribed Diogenes, the commander of the garrisons, to give up the positions for a hundred and fifty talents, himself helping the Athenians by contributing a sixth part of the sum. He induced Aristomachus also, the tyrant of Argos , to restore to the Argives their democracy and to join the Achaean League; he captured Mantinea from the Lacedaemonians who held it. But no man finds all his plans turn out according to his liking, and even Aratus was compelled to become an ally of the Macedonians and Antigonus in the following way.

[6] After his success in the Peloponnesus, Aratos thought it a shame to allow the Macedonians to hold unchallenged Peiraieus, Mounukhia, Salamis, and Sounion; but not expecting to be able to take them by force he bribed Diogenes, the commander of the garrisons, to give up the positions for a hundred and fifty talents, himself helping the Athenians by contributing a sixth part of the sum. He induced Aristomakhos also, the tyrant of Argos, to restore to the Argives their democracy and to join the Achaean League; he captured Mantineia from the Lacedaemonians who held it. But no man finds all his plans turn out according to his liking, and even Aratos was compelled to become an ally of the Macedonians and Antigonos in the following way.