ARAB LEARNING In this, as in all branches of exact learning of the Moslems, the Arabic language stands alone at first and even in later times occupies the foremost place, whether the student immediately concerned was of pure Arab descent (which was probably very seldom the case) or of mixed or foreign blood. This holds good of the sciences related to theology, above all, and of all branches of knowledge taught in the schools. Not one of the sciences properly so called was evolved by the Arabs (and the word may be taken in the most comprehensive sense) out of their own inner consciousness, not even grammar, the first branch of learning to assume the form of an exact science; some of the fundamental conceptions involved in it originated in the logic of Aristotle. This science, arising, as it did, out of the necessity of expounding the _Koran_ and ancient poetry and the desire to preserve the classic tongue of the Bedouins, which was liable to rapid alteration in the lands they had conquered, developed then, it is true, on very independent lines. Above all, Arab philosophy is wholly dependent upon Greek works, most of them translated from the original by Syrians or known through Syrian versions.[25] Even Islamite dogmatism found itself constrained to adopt the methods of the pagan philosophy of Greece. The men who laid the foundations of Arab learning were for the most part not of Arab descent, though exceptions are more numerous than is commonly supposed. Sibawaih, who drew up the first great compendium of the Arabic language, was a Persian; though practically all he did was to compile what he had heard from his teachers, the chief of whom, Khalil, was in all likelihood a pure-blooded Arab. And this work, upon which that of later schools made little advance as far as the substance is concerned, is very clumsy in form, and as unsystematic as though he had been of pure Arab descent. Exact systematisation is a hard thing for the true Semite to compass. The ascendency exercised by the Arabic language during the centuries in which the intellectual life of Islamite countries was in its glory is best seen from the fact that even those Persians who claimed precedence for their own nation set forth their opinions to that effect in Arabic works.