Space precludes my telling of other convents which were centers of literary activity, and of nuns who distinguished themselves by their learning and by the benign influence which they exerted far beyond the walls of the cloister. I cannot, however, refrain from referring to that group of learned English nuns who are chiefly known by their Latin correspondence with St. Boniface, the Apostle of Germany, and by the assistance which they gave him in his arduous labors. Conspicuous among these was St. Lioba, who, at the request of Boniface, left her home in England to found a convent at Bischopsheim in Germany, which, under the direction of its learned and zealous abbess, soon became the most important educational center in that part of Europe. Teachers were formed here for other schools in Germany and Lioba's biographer tells us that there were few _monasteria feminarum_--monasteries of women--within the sphere of Boniface's missionary activities for which Lioba's pupils were not sought as instructresses. Like her illustrious countrywoman, St. Hilda, the abbess of Bischopsheim was the friend and counselor of spiritual and temporal rulers. Charlemagne, that eminent patron of scholars, had a great admiration for her and gave her many substantial proofs of his esteem and veneration. "Princes," writes her biographer, "loved her, noblemen received her, and bishops gladly entertained her and conversed with her on the Scriptures and on the institutions of religion, for she was familiar with many writings and careful in giving advice. She was so bent on reading that she never laid aside her book except to pray or to strengthen her slight frame with food or sleep."[35] She was thoroughly conversant with the books of the Old and the New Testaments and was, at the same time, familiar with the writings of the Fathers. It is not surprising, then, that she was regarded as an oracle, and that all classes flocked to her as they did to the abbess of Whitby for guidance and assistance. From what has been said of the accomplishments and achievements of the Anglo-Saxon nuns just mentioned, it is evident that they were, of a truth, women of exceptional worth and of sterling character. And it is equally clear that their pupils must have shared in the education and culture of their distinguished teachers.[36] Many of them, in addition to having a wide acquaintance with literature, sacred and profane, were also mistresses of several languages. A woman's education, at this time, was not complete unless she could write Latin and speak it fluently. The author of that most interesting early English work, _Ancren Riwle_--Rule of Anchoresses--presupposes in his auditors, for whose benefit his instructions were given, a knowledge of Latin and French, as well as of English. In certain convents Latin was almost the sole medium of communication,--to such an extent, indeed, that a special rule was made prohibiting "the use of the Latin tongue except under special circumstances."