History of the Peloponnesian War

And yet you ought, if possible, to stand aloof from both parties; or if not that, on the contrary, to go with us against them; (with the Corinthians, at any rate, you are connected by treaty; while with the Corcyraeans you were never yet so much as in truce;) and not to establish the law, that we should receive those who are revolting from others.

For neither did we, when the Samnians had revolted, give our vote against you, when the rest of the Peloponnesians were divided in their votes, as to whether they should assist them; but we openly maintained the contrary, that each one should punish his own allies.

For if you receive and assist those who are doing wrong, there will be found no fewer of your allies also who will come over to us; and you will make the law against yourselves, rather than against us.