Alfonso x. indicates in _Cantiga_ viii. that in his day a young man needed the help of the Holy Spirit before he could learn to speak Latin. To help on the propagation of the Christian religion, even Arabic was sometimes resorted to. Juan, Bishop of Seville, wrote sermons in Arabic at the beginning of the tenth century,[78] “a proof,” says Valmar, “that Latin was little known, as also the Romance language which was not yet risen.” French, owing to the influence of the parish schools, took the precedence of all the neo-Latin languages, and had a powerful influence over other nations. There was a sudden flowering of Romance poetry in England just after the Norman conquest in 1066, and this spread to all the neo-Latin peoples--the story of Tristam and Iseult, the Arthurian legends, penetrated more deeply than the provençal lyrics. St. Francis of Assisi went about reciting French songs. Sir John Mandeville was the precursor of the famous Portuguese Ferñao Mendes Pinto, wrote in French the story of his travels in Asia (published by Lynn just after the invention of printing in 1480). Marco Polo also wrote, or rather dictated, his book of travel in French. Alfonso _el Sabio_ did not write in a vulgar dialect, but in the cultivated and polished language used by the aristocracy of Galicia. “The popular Gallegan dialect remained in the land of its birth, and kept the characteristic of a euphonic dialect,” says Valmar; but the language of learning ‘el Gallego erudito,’ so skilfully used by Alfonso and those innumerable Portuguese Spanish poets whose work is preserved in the Cancionero of the Vatican, acquired (without losing the essence of the primitive dialect) the character of a refined literary language. This language it was which became the mother of Portuguese. The trouvadores of Aquitaine came in such numbers to Santiago, that it is no wonder they founded a centre of poetical unification, as Theophile Braga has called it. It was a school of national lyric poetry in the language which has been called Galaico-Portuguese. French influence was strongly reflected in it. It reached its highest point of resplendence in the reign of Alfonso X., and at that time even the lower classes understood and appreciated its poetry; so historians need be surprised no longer that the poet king chose to write in the language of Galicia.