Dill, Roman Society in the Last Century of the Western Empire (London, 1898).
But a powerful counterpoise to this tendency was continually maintained by the fervid inwardness of Augustine, transmitted through Gregory the Great, Isidore of Seville, Alcuin, Hrabanus Maurus, and other writers of the philosophically barren period between the destruction of the Western empire and the rise of Scholasticism.
It was by means of their horsemen that the Austrasian Franks established their superiority over their neighbours, and in time created the Western Empire anew, while from the word caballarius, which occurs in the Capitularies in the reign of Charlemagne, came the words for knight in all the Romance languages.
If we may trust the evidence of Zosimus, from the end of the year 388 Theodosius resigned himself to gluttony and voluptuous living, from which he was only roused by the news that in the Western empire Arbogast had slain the young Emperor Valentinian and set up the grammarian Eugenius in his stead (May 15, 392).
This change synchronized with the revival of the Western Empire under Charlemagne, a revival which necessarily gave an impulse to the claims of the see of Rome.
On the history of Neoplatonism with special reference to the decline of Roman polytheism, see, e.g., Samuel Dill, Roman Society in the Last Century of the Western Empire (1898), pp. 82 foil.
Dill, Roman Society in the last century of the Western Empire (London,.