In brief, some of the chief influences upon the writing of Latin in the Middle Ages were: the classical genius dead, leaving only its works for imitation; the school education in Latin grammar and rhetoric; endeavour to follow classic models and write correctly; inability to do so from lack of capacity and knowledge; conscious disregard of classicism; the spirit of the Teutonic tongues clogging Latinity, and that of the Romance tongues deflecting it from classical constructions; and finally, the plastic faculties of advancing Christian mediaeval civilization educing power from confusion, and creating modes of language suited to express the thoughts and feelings of mediaeval men. The life, that is to say the living development, of mediaeval Latin prose, was to lie in the capacity of successive generations of educated men to maintain a sufficient grammatical correctness, while at the same time writing Latin, not classically, but in accordance with the necessities and spirit of their times. There resulted an enormous literature which was not dead, nor altogether living, and lacked throughout the spontaneity of writings in a mother tongue; for Latin was not the speech of hearth and home, nor everywhere the tongue of the market-place and camp. But it was the language of mediaeval education and acquired culture; it was the language also of the universal church, and, above all other tongues, expressed the thoughts by which men were saved or damned. More profoundly than any vernacular mediaeval literature, the Latin literature of the Middle Ages expresses the mediaeval mind. It thundered with the authority that held the keys of heaven; it was resonant with feeling, and through long centuries gave voice to emotions, shattering, terror-stricken, convulsively loving. When, say with the close of the eleventh century, the mediaeval peoples had absorbed with power the teachings of patristic Christianity, and had undergone some centuries of Latin schooling, and when under these two chief influences certain distinctive and homogeneous ways of thinking, feeling, and looking upon life, had been reached; when, in fine, the Middle Ages had become themselves and had evolved a genius that could create,--then and from that time appears the adaptability and power of mediaeval Latin to serve the ends of intellectual effort and the expression of emotion.