With the triumph of relativism and the current economic woes of the West, the sense that Western civilization is unique and in some respects—to use an old-fashioned word—better than the alternatives, and worth defending and exporting, is waning. But Bernard Lewis’ The Muslim Discovery of Europe suggests a longer view in which Europe, while containing all the faults of previous civilizations, has been one of the few to begin the process of correcting those faults, and has corrected many more than any other civilization.