History of the Peloponnesian War

Thucydides

Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.

but rather regarding it as an admonition to take good advice, offered to men who are well informed. For it is in your power honourably to secure your present good fortune, keeping the advantages you have, and receiving an recession of honour and renown; and not to feel as men do that gain any advantage contrary to their habit; for through hope they are ever grasping for more, because they have unexpectedly enjoyed even their present good luck.

But those who have had most changes of fortune both ways, ought fairly to be most distrustful of prosperity. And this might reasonably be the case, both with your city, owing to its great experience, and with ourselves.

"You may learn this lesson by looking at our present misfortunes; for though enjoying the highest reputation of all the Greeks, we are now come [with this request] to you, though we were before accustomed to think that we had ourselves more power to grant what we have now come to sue for.