The importance of deciding what happened in Britain when the central government of Rome failed, does not lie in the fact that an historical conclusion one way or the other can affect the truth. European civilization is still one whether men see that unity or no. The Catholic Church is still the soul of it, whether men know it or do not know it. But the problem presented by the fate of Britain at that critical moment when the provinces of the Roman Empire became independent of any common secular control, has this practical importance: that those who read it wrongly and who provide their readers with a false solution (as the Protestant German school and their copiers in English, Freeman, Green and the rest have done) those who talk of “the coming of the English,” “the Anglo-Saxon conquest,” and the rest, not only furnish arguments against the proper unity of our European story but also produce a warped attitude in the mind. Such men as are deceived by false accounts of the fate of Britain at the entry into the Dark Ages, take for granted many other things historically untrue. Their presumptions confuse or conceal much else that is historical truth: for instance, the character of the Normans; and even contemporary and momentous truth before our eyes today: for instance, the gulf between Englishmen and Prussians. They not only render an Englishman ignorant of his own nation and therefore of himself, they also render all men ignorant of Europe: for a knowledge of Britain in the period 500-700 as in the period 1530-1630 is the test of European history: and if you are wrong on these two points you are wrong on the whole. A man who desires to make out that the Empire—that is European civilization—was “conquered” by barbarians cannot today, in the light of modern research, prove his case in Gaul, in Italy, in Spain, or in the valley of the Rhine. The old German thesis of a barbaric “conquest” upon the Continent, possible when modern history was a child, has necessarily been abandoned in its maturity. But that thesis still tries to make out a plausible case when it speaks of Britain, because so much of the record here is lost that there is more room for make-believe; and having made it out, the tale of a German and barbaric England, his false result will powerfully affect modern and immediate conclusions upon our common civilization, upon our institutions, and their nature, and in particular upon the Faith and its authority in Europe.