From the 1960s until his death in 2013, Robert N. Bellah was the preeminent figure in the study of religion and society. He broke new ground in mapping the religious dimensions of human experience, from the great breakthroughs of the first millennium BCE to the paradoxes of American civic life. In three final essays, published here for the first time, Bellah grapples with the contradictions of modernity, and seven leading thinkers respond with profound, exhilarating new perspectives on our present predicament. Challenging Modernity critically assesses the modern project to shed light on the tensions between its transcendent aspirations and the perils we now face. Its contributors analyze the roots of the collapse of the political, economic, and cultural institutions that have promised perpetual progress but now threaten global catastrophe. Reflecting the range of Bellah's scholarship, they span the disciplines of history, sociology, anthropology, and philosophy. They extend Bellah's insight that only deep historical, cultural, and religious understanding can help us meet modernity's harrowing challenges by sharing responsibility for the global interdependence of our common fate.