However that may prove, no existing Basque song is much more than three hundred years old. One single Basque of genius, the Chancellor Pero López de Ayala, shines a portent in the literature of the fourteenth century; and even so, he writes in Castilian. He stands alone, isolated from his race. The oldest Basque book, well named as _Linguæ Vasconum Primitiæ_, is a collection of exceedingly minor verse by Bernard Dechepare, curé of Saint-Michel, near Saint-Jean Pied de Port; and its date is modern (1545). Pedro de Axular is the first Basque who shows any originality in his native tongue; and, characteristically enough, he deals with religious matters. Though he lived at Sare, in the Basses Pyrénées, he was a Spaniard from Navarre; and he flourished in the seventeenth century (1643). It is true that a small knot of second-class Basque—the epic poet Ercilla y Zúñiga, and the fabulist Iriarte—figure in Castilian literature; but the Basque glories are to be sought in other field—in such heroic personages as Ignacio Loyola, and his mightier disciple Francisco Xavier. Setting aside devotional and didactic works, mostly translated from other tongues, Basque literature is chiefly oral, and has but a formal connection with the history of Spanish letters. Within narrow geographical limits the Basque language still thrives, and on each slope of the Pyrenees holds its own against forces apparently irresistible. But its vitality exceeds its reproductive force: it survives but does not multiply. Whatever the former influence of Basque on Castilian—an influence never great—it has now ceased; while Castilian daily tends to supplant (or, at least, to supplement) Basque. Spain's later invaders—Iberians, Kelts, Phœnicians, Greeks, Carthaginians, Alani, Suevi, Goths, and Arabs—have left but paltry traces on the prevailing form of Spanish speech, which derives from Latin by a descent more obvious, though not a whit more direct, than the descent of French. So frail is the partition which divides the Latin mother from her noblest daughter, that late in the sixteenth century Fernando Pérez de Oliva wrote a treatise that was at once Latin and Spanish: a thing intelligible in either tongue and futile in both, though held for praiseworthy in an age when the best poets chose to string lines into a polyglot rosary, without any distinction save that of antic dexterity.