That the defence which was made with Ravenna for its citadel was not wholly victorious, that the attack which the eastern empire planned and delivered from Ravenna, perhaps too late, was not completely successful, were the results of many and various causes, but not of any want of Judgment in the choice of Ravenna as their base. That base was rightly and consummately chosen without hesitation and from the first; and because it was chosen, the hope of the restoration never quite passed away and seemed to have been realised at last when Charlemagne, following Pepin into Italy, was crowned emperor in S. Peter's Church on Christmas Day in the year 800. It will readily be understood, then, that the most important and the most interesting part of the history of Ravenna begins when Honorius retreated upon her before the invasion of Alaric, and not only the West, but Italy and Rome, the heart and soul of it, seemed about to be in dispute. But first amid all the loose thought and confusion of the last three hundred years let us make sure of fundamentals. I shall take for granted in this book that Rome accepted the Faith not because the Roman mind was senile, but because it was mature; that the failure of the empire is to be regretted; that the barbarians were barbarians; that not from them but from the new and Christian civilisation of the empire itself came the strength of the restoration, the mighty achievements of the Middle Age, of the Renaissance, of the Modern world. The barbarian, as I understand it, did nothing. He came in naked and ashamed, without laws or institutions. To some extent, though even in this he was a failure, he destroyed; it was his one service. He came and he tried to learn; he learnt to be a Christian. When the empire re-arose it was Roman not barbarian, it was Christian not heathen, it was Catholic not heretical. It owed the barbarian nothing. That it re-arose, and that as a Roman and a Catholic state, is due largely to the fact that Honorius retreated upon Ravenna. If we could depend upon the dates in the Theodosian Code we should be able to say that Honorius finally retreated upon Ravenna before December 402;[1] unhappily the dates we find there must not be relied upon with absolute confidence. We may take it that Alaric entered Venetia in November 401, and that at the same time Radagaisus invaded Rhaetia. Stilicho, Honorius' great general and the hero of the whole defence, advanced against Radagaisus. Upon Easter Day in the following year, however, he met Alaric at Pollentia and defeated him, but the Gothic king was allowed to withdraw from that field with the greater part of his cavalry entire and unbroken. Stilicho hoping to annihilate him forced him to retreat, overtook him at Asta (Asti), but again allowed him to escape and this time to retreat into Istria. [Footnote 1: Cf. Hodgkin, _Italy and her Invaders_, vol. i. pt. 2, p. 712.]