Book excerpt: Bernard Lewis looks at the new era in the Middle East. With the departure of imperial powers, the region must now, on its own, resolve the political, economic, cultural, and societal problems that prevent it from accomplishing the next stage in the advance of civilization. There is enough in the traditional culture of Islam on the one hand and the modern experience of the Muslim peoples on the other, he explains, to provide the basis for an advance toward freedom in the true sense of that word.