History of the Peloponnesian War

"Now the Lacedaemonians invite you to a treaty and conclusion of the war, offering you peace and alliance, and that there should subsist between us in other respects close friendship and intimacy with one another; while they ask back, in return, their men in the island; at the same time, thinking it better for both parties not to try the chances of war to the uttermost, whether they may escape by force through some accidental means of preservation, or be reduced to surrender, and be more severely dealt with.

And we think that great enmities would be most effectually reconciled, not if one party, acting in a revengeful spirit, and after gaining most advantages in the war, should bind the other down by compulsory oaths, and make an arrangement with him on unequal terms; but if, when he might do so, showing regard for fairness, and conquering him by a display of goodness, he should, beyond his expectations, be reconciled to him on moderate terms.

For his adversary being now bound, not to retaliate on him, as one who had been treated with violence, but to make him a return of goodness, is more disposed, for very shame, to abide by the terms of his agreement.

And men act thus towards their greatest enemies, more than towards those who have quarrelled with them in an ordinary degree: and they are naturally disposed with pleasure to give way in their turn to such as willingly yield to them; but against those that are overbearing, to hazard all, even against their better judgment.