"A Secular Age" is a philosophical work by Charles Taylor that explores the transition from a society where belief in God was the default to one where secularism is prevalent. Taylor examines how modernity has reshaped the landscape of faith, emphasizing the role of individualism and pluralism in shaping contemporary beliefs. The book discusses the historical and cultural factors that contributed to this shift, including the rise of science, the Enlightenment, and the impact of Protestantism. Taylor argues that understanding this transition is crucial for grasping the complexities of modern identity and the diverse ways people engage with spirituality today.