The first effect of the great Teutonic migration into the regions civilised by Rome was to throw back Europe many centuries to a condition scarcely more advanced than that from which the institutions of Solon had rescued Athens. Whilst the Greeks preserved the literature, the arts, and the science of antiquity and all the sacred monuments of early Christianity with a completeness of which the rended fragments that have come down to us give no commensurate idea, and even the peasants of Bulgaria knew the New Testament by heart, Western Europe lay under the grasp of masters the ablest of whom could not write their names. The faculty of exact reasoning, of accurate observation, became extinct for five hundred years, and even the sciences most needful to society, medicine and geometry, fell into decay, until the teachers of the West went to school at the feet of Arabian masters. To bring order out of chaotic ruin, to rear a new civilisation and blend hostile and unequal races into a nation, the thing wanted was not liberty but force. And for centuries all progress is attached to the action of men like Clovis, Charlemagne, and William the Norman, who were resolute and peremptory, and prompt to be obeyed. The spirit of immemorial paganism which had saturated ancient society could not be exorcised except by the combined influence of Church and State; and the universal sense that their union was necessary created the Byzantine despotism. The divines of the Empire who could not fancy Christianity flourishing beyond its borders, insisted that the State is not in the Church, but the Church in the State. This doctrine had scarcely been uttered when the rapid collapse of the Western Empire opened a wider horizon; and Salvianus, a priest at Marseilles, proclaimed that the social virtues, which were decaying amid the civilised Romans, existed in greater purity and promise among the Pagan invaders. They were converted with ease and rapidity; and their conversion was generally brought about by their kings.