Note 93 — Chapter VIII · FREETHOUGHT UNDER ISLAM1

In the struggle between science and religion, in a politically decadent State, the latter inevitably secured the administrative power.93 Under the Khalifs Motamid (d. 892) and Motadhed (d. 902) all science and philosophy were proscribed, and booksellers were put upon their oath not to sell any but orthodox books.94 Thus, though philosophy and science had secretly survived, when the political end came the popular faith was in much the same state as it had been under Haroun Al Raschid. Under Islam as under all the faiths of the world, in the east as in the west, the mass of the people remained ignorant as well as poor; and the learning and skill of the scholars served only to pass on the saved treasure of Greek thought and science to the new civilization of Europe. The fact that the age of military and political decadence was that of the widest diffusion of rationalism is naturally fastened on as giving the explanation of the decline; but the inference is pure fallacy. The Bagdad Khalifate declined as the Christianized Roman Empire declined, from political and external causes; and the Turks who overthrew it proceeded to overthrow Christian Byzantium, where rationalism never reared its head.