THREE:Besides the general religious movement which had long been in action, and was daily gaining strength from the increasing barbarisation of the empire, there was, at this juncture, a particular cause tending to bring Greek philosophy into close alliance with the mythology which it had formerly rejected and denounced. This was the rapid rise and spread of Christianity. St Augustine has said that of all heathen philosophers none came nearer to the Christian faith than the Neo-Platonists.528 Nevertheless, it was in them that the old religion found its only apologists and the new religion its most active assailants. We have already alluded to the elaborate polemic of Porphyry. Half a century later, the same principles could boast of a still more illustrious champion. The emperor Julian was imbued with the doctrines of Neo-Platonism, and was won back to the ancient faith by the teaching of its professors."Oh yes, it has been destroyed already a couple of times, but we shall teach them a lesson! Why did not the Belgians allow us to pass through their country? What can their little army do against us? As soon as a sufficient number have crossed we shall go for these forts, then on to Brussels, and within a fortnight we shall be in Paris. Lige we have taken already."