Friendship and the Moral Life is not simply a theoretical argument about how moral theology might be done if it took friendship more seriously. Rather, the book exhibits how without friendship, our lives are morally not worth living. The book begins with a consideration of why a new model of the moral life is needed. Wadell then examines the ethics of Aristotle, who viewed the moral life as based on a specific understanding of the purpose of being human, with friendship being an important factor in enabling people to acquire virtues necessary for achieving this purpose. Through the thought of Augustine, Aelred of Reivaulx, and Karl Barth, the question is raised whether friendship is at odds with Christian love or whether their relation depends on one’s narrative account of friendship. Thomas Aquinas’ understanding of charity as friendship with God is examined to clarify this relationship.