"A crucial turning point in that earlier history occurred when men and women of good will turned aside from the task of shoring up the Roman imperium and ceased to identify the continuation of civility and moral community with the maintenance of that imperium. What they set themselves out to achieve instead - often not recognizing fully what they were doing - was the construction of new forms of community within which the moral life could be sustained so that both morality and civility might survive the coming age of barbarism and darkness."