Book excerpt: In the Course of a Lifetime provides an unprecedented portrait of the dynamic role religion plays in the everyday experiences of Americans over the course of their lives. The book draws from a unique sixty-year-long study of close to two hundred mostly Protestant and Catholic men and women who were born in the 1920s and interviewed in adolescence, and again in the 1950s, 1970s, 1980s, and late 1990s. Woven throughout with rich, intimate life stories, the book presents and analyzes a wide range of data from this study on the participants' religious and spiritual journeys. A testament to the vibrancy of religion in the United States, In the Course of a Lifetime provides an illuminating and sometimes surprising perspective on how individual lives have intersected with cultural change throughout the decades of the twentieth century.