History of the Peloponnesian War

And the citadel, from the ancient habitation of it, is also by the Athenians still called the city.

The Athenians therefore had lived a long time governed by laws of their own country towns and, after they were brought into one, were nevertheless (both for the custom which most had, as well of the ancient time as since till the Persian war, to live in the country with their whole families; and also especially for that since the Persian war they had already repaired their houses and furniture) unwilling to remove.

It pressed them likewise and was heavily taken besides their houses to leave the things that pertained to their religion (which, since their old form of government, were become patrial) and to change their manner of life and to be no better than banished every man his city.

After they came into Athens, there was habitation for a few and place of retire with some friends or kindred. But the greatest part seated themselves in the empty places of the city and in temples and in all the chapels of the heroes, saving in such as were in the citadel and the Eleusinium and other places strongly shut up. The Pelasgicum also under the citadel, though it were a thing accursed to dwell in it and forbidden by the end of a verse in a Pythian oracle in these words, Best is the Pelasgicum empty, was nevertheless for the present necessity inhabited.

And in my opinion, this prophecy now fell out contrary to what was looked for. For the unlawful dwelling there caused not the calamities that befell the city, but the war caused the necessity of dwelling there, which war the oracle, not naming, foretold only that it should one day be inhabited unfortunately.