For the sake of convenience we may distinguish these three stages as:-- I. The Anglo-Saxon Period. II. Education under Church Control. III. Education passing out of Church Control. BOOK I. THE ANGLO-SAXON PERIOD. CHAPTER I. THE WORK OF THE MONASTERIES. The introduction of Christianity to this country subsequent to the Saxon invasion was effected by means of two independent agencies--the Roman mission under the leadership of Augustine which arrived in Thanet in 597, and the Scottish missionaries who, in response to the invitation of Oswald, king of Northumbria, took up their residence in the island of Lindisfarne in 635. The primary task of these missionaries was obviously that of converting a people who professed a heathen religion to an adherence to the Christian faith. The accomplishment of this main task, however, involved two additional tasks, the one moral, the other social. A dismal picture of the moral condition of the settlers in this country in the fifth century has been painted by Montalembert. Basing his account on Ozanam's "Germains avant la Christianisme" he asks, "What could be expected in point of morality from persons accustomed to invoke and to worship Woden, the god of massacres, Freya, the Venus of the North, the goddess of sensuality, and all those bloody and obscene gods of whom the one had for his emblem a naked sword and another the hammer with which he broke the heads of his enemies?" He continues, "The immortality which was promised to them in their Valhalla but reserved for them new days of slaughter and nights of debauch spent in drinking deep from the skulls of their victims. And in this world, their life was but too often a prolonged orgy of carnage, rapine and lechery."[3] Herein lay the moral task which awaited the Christian missionaries. They had to replace the existing national ideals with the ideals of Christianity--ideals of the highest standard of personal morality. The social task undertaken by the missionaries was that of elevating this country from a condition of barbarism into a state of civilisation. Referring to the results of the introduction of Christianity, Green writes, "The new England was admitted into the older commonwealth of nations. The civilisation, art, letters, which had fled before the sword of the English conquest returned with the Christian faith."[4]