While Islam has often been characterized as unitary and unchanging, by both Muslims and Westerners for their own particular reasons, that has never been the case–and today’s world is no exception. Legalists and mystics debate, and radical groups exist at the same time as Muslim feminists who advocate new interpretations of the Koran. This is the core argument of my guest John Tolan’s new book Islam: A New History, from Muhammad to the Present. Ranging from new historical research on the first decades of the origins of the Muslim faith, he moves across centuries and millennia capturing the diversity and debate which characterized the history of the youngest of the three great monotheistic religions. Its diversity was fueled not just by religious debate, but by the great cultures which it assimilated, engaged, or had continual contact over the vast territory across which it spread. John Tolan is professor emeritus of history at the University of Nantes. His books include England’s Jews, Faces of Muhammad, Saint Francis and the Sultan, and Saracens.
Episode 408: Islam
While Islam has often been characterized as unitary and unchanging, by both Muslims and Westerners for their own particular reasons, that has never been the case–and today’s world is no exception. Legalists and mystics debate,
May 19, 2025

Historically Thinking
We believe that when people think historically, they are engaging in a disciplined way of thinking about the world and its past. We believe it gives thinkers a knack for recognizing nonsense; and that it cultivates not only intellectual curiosity and rigor, but also intellectual humility. Join Al Zambone, author of Daniel Morgan: A Revolutionary Life, as he talks with historians and other professionals who cultivate the craft of historical thinking.
We believe that when people think historically, they are engaging in a disciplined way of thinking about the world and its past. We believe it gives thinkers a knack for recognizing nonsense; and that it cultivates not only intellectual curiosity and rigor, but also intellectual humility. Join Al Zambone, author of Daniel Morgan: A Revolutionary Life, as he talks with historians and other professionals who cultivate the craft of historical thinking.Listen on
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