For nearly a thousand years after the death of the prophet Muhammad, the Islamic world was powerful, creative, and self-confident. In science, in trade, and in the arts, Muslim civilization rivaled and often surpassed the best achievements of the European world. But beginning sometime around the seventeenth century, Islamic power and dynamism began to wane, to be eclipsed by the West. Today, by nearly every measure of social and economic development, Islamic nations fall far short of Western nations. Why? Did the historical rise and decline of Islam result from processes internal to the Muslim world or from its interaction with the West? What can and should be done to revive Islamic civilization?