A comparison between Islamic fundamentalism and various Western critiques of rationalism yields formerly uncharted connections between Western and Islamic political thought, allowing the author to reclaim an understanding of political theory as inherently comparative. Her arguments bear on broad questions about the methods Westerners employ to understand movements and ideas that presuppose nonrational, transcendent truths. Euben finds that first, political theory can play a crucial role in understanding concrete political phenomena often considered beyond its jurisdiction; second, the study of such phenomena tests the scope of Western rationalist categories; and finally, that Western political theory can be enriched by exploring non-Western perspectives on fundamental debates about coexistence.