This double method of study, in which the literal meaning of the Scriptures was made the basis of interpreting their spiritual signification, was begun very early, and even young children were considered capable of being introduced by degrees to the spiritual comprehension of the Sacred Books. So far from these being a treasure sealed up to all save the clergy, they formed the foundation stone of all education. Thus Thegan writes of the Emperor Louis le Debonnaire, that he had been perfectly instructed in the allegorical and mystical interpretation of the Scriptures, and we learn from St. Aldhelm’s treatise, “_De Laudibus Virginitatis_,” that the nuns for whom he intended it were not only accustomed to read the Old and New Testaments, together with the Commentaries of the Fathers, but that they also studied the historical, allegorical, and analogical senses of different passages. Nor is this by any means an exceptional case, for in the religious houses of women sacred studies were pursued with hardly less eagerness than in those of men. And here the temptation presents itself to say something of the schools provided in the Dark Ages for the education of women, such as the royal house of Chelles, where the wise Bertilla presided over scores of English scholars sent by their parents to France, as we must needs suppose, for fashion’s sake, for there were certainly plenty of good schools to be found in England. Fashion, however, has much to do with the selection of a school, and Chelles was naturally popular with the English, having been founded in the seventh century by a princess of Anglo-Saxon blood. Queen Bathildis, indeed, was not of royal birth; she was a poor maiden who had been sold as a slave into France, and attracting the attention of Clovis II., was raised by him to share his throne. Her first thought in her new position was to procure the abolition of slavery, or at least the amelioration of the condition of slaves. “She was,” says her biographer, “of a beautiful and cheerful countenance, to her husband an obedient wife, to the princes a mother, to boys and youths the best of counsellors; to all an amiable and gracious friend,” and he adds that among her other good deeds, “she was always exhorting and encouraging the youth around her to religious studies.” So soon as her son Clothaire was old enough to govern, Bathildis, who during his minority had acted as regent, retired to Chelles and spent the remainder of her days in the humble office of infirmarian. But her foundation had meanwhile acquired a great reputation for learning, which was yet further increased when Gisella, the sister of Charlemagne, and the pupil of Alcuin, assumed its government in the ninth century.