Charles Willard's provocative Argumentation and the Social Grounds of Knowledge is not a celebration of controversy but a sophisticated study that explores the social basis of human knowledge. Drawing upon phenomenologists such as Alfred Schultz, psychologists such as George Kelley, and argumentation philosophers such as Stephen Toulmin, Willard makes a genuine contribution to intellectual inquiry by extending essential consideration about human knowledge. He insightfully demonstrates how "secular sources" provide a fundamental resource in developing religious understanding from argumentative interactions.