Such a division is arbitrary, but not altogether illogical. It has been urged that Rome itself did not know it had fallen in the year 476; and that the Roman Empire--even the Roman Republic, in the phrasing of the time--went on, as the minds of contemporaries conceived it, uninterruptedly for many centuries after the date which we of later time fix for the quietus of Roman imperial life. But few things are better established than the fact that a clear conception of history demands a certain opportunity for the observation of events in perspective. In other words a contemporary judgment is rarely, if ever, the best judgment regarding any epoch. In the multiplicity of details that are thrust necessarily upon the attention of the contemporary observer, large proportions are lost, and a confused mass of little things makes the picture as unintelligible as is the large canvas of the painter when viewed at too short a focus. With the historical view, as with the painting, one must recede to a certain distance before gaining a measurably true conception. And so looking back through the vista of centuries one is able to observe very clearly that the time of the alleged fall of the Western Roman Empire was a time of real crisis in the sweep of historical events. The erection of the one focal date is, to be sure, a quite unjustifiable marking of boundary lines, unless it be regarded in the same way in which one thinks of the parallels of latitude and longitude on the globe. It is a convenient milestone, nothing more. But the epoch which it marks, if not to be limited to the confines of a single year, is none the less a true epoch; as no one can doubt who will consider the history of Rome in the aggregate during the first, second, and third centuries of the Christian era, and then will consider the history of the same city during the fifth, sixth, and seventh centuries. Obviously, a vast change has come over the spirit of civilisation in this time; the later centuries, contrasted with the earlier ones, may well be considered a dark age.