Since its initial publication in 1965, The Secular City has been hailed as a classic for its nuanced exploration of the relationships among the rise of urban civilization, the decline of hierarchical, institutional religion, and the place of the secular within society. Now, half a century later, this international best seller remains as relevant as when it first appeared. The book's arguments—that secularity has a positive effect on institutions, that the city can be a space where people of all faiths fulfill their potential, and that God is present in both the secular and formal religious realms—still resonate with readers of all backgrounds. For this brand-new edition, Harvey Cox provides a substantial and updated introduction. He reflects on the book's initial stunning success in an age of political and religious upheaval and makes the case for its enduring relevance at a time when the debates that helped ignite have caught fire once again.