There is, however, apart from its religious value, a more general view from which the book should be considered. The Koran enjoys the distinction of having been the starting-point of a new literary and philosophical movement which has powerfully affected the finest and most cultivated minds among both Jews and Christians in the Middle Ages. This general progress of the Muhammedan world has somehow been arrested, but research has shown that what European scholars knew of Greek philosophy, of mathematics, astronomy, and like sciences, for several centuries before the Renaissance, was, roughly speaking, all derived from Latin treatises ultimately based on Arabic originals; and it was the Koran which, though indirectly, gave the first impetus to these studies among the Arabs and their allies. Linguistic investigations, poetry, and other branches of literature, also made their appearance soon after or simultaneously with the publication of the Koran; and the literary movement thus initiated has resulted in some of the finest products of genius and learning.
The style in which the Koran is written requires some special attention in this introduction. The literary form is for the most part different from anything else we know. In its finest passages we indeed seem to hear a voice akin to that of the ancient Hebrew prophets, but there is much in the book which Europeans usually regard as faulty. The tendency to repetition which is an inherent characteristic of the Semitic mind appears here in an exaggerated form, and there is in addition much in the Koran which strikes us as wild and fantastic. The most unfavourable criticism ever passed on Muhammed's style has in fact been penned by the prophet's greatest British admirer, Carlyle himself; and there are probably many now who find themselves in the same dilemma with that great writer.