Notwithstanding that Arabic is thus, in a sense, the youngest of the Semitic languages, it is generally allowed to be nearer akin than any of them to the original archetype, the 'Ursemitisch,' from which they all are derived, just as the Arabs, by reason of their geographical situation and the monotonous uniformity of desert life, have in some respects preserved the Semitic character more purely and exhibited it more distinctly than any people of the same family. From the period of the great Moslem conquests (700 A.D.) to the present day they have extended their language, religion, and culture over an enormous expanse of territory, far surpassing that of all the ancient Semitic empires added together. It is true that the Arabs are no longer what they were in the Middle Ages, the ruling nation of the world, but loss of temporal power has only strengthened their spiritual dominion. Islam still reigns supreme in Western Asia; in Africa it has steadily advanced; even on European soil it has found in Turkey compensation for its banishment from Spain and Sicily. While most of the Semitic peoples have vanished, leaving but a meagre and ambiguous record, so that we cannot hope to become intimately acquainted with them, we possess in the case of the Arabs ample materials for studying almost every phase of their development since the sixth century of the Christian era, and for writing the whole history of their national life and thought. This book, I need hardly say, makes no such pretensions. Even were the space at my disposal unlimited, a long time must elapse before the vast and various field of Arabic literature can be thoroughly explored and the results rendered accessible to the historian. [Sidenote: Arabs of the North and South.]