Steven Wasserstrom undertakes a detailed analysis of the "creative symbiosis" that existed between Jewish and Muslim religious thought in the eighth through tenth centuries. Wasserstrom brings the disciplinary approaches of religious studies to bear on questions that have been examined previously by historians and by specialists in Judaism and Islam. His thematic approach provides an example of how difficult questions of influence might be opened up for broader examination.

In Part I, "Trajectories," the author explores early Jewish-Muslim interactions, studying such areas as...