O'Donovan traces the development of these concepts from Greek philosophy through early Christianity, the Enlightenment, and into the modern era. Engaging with a range of thinkers including Aristotle, Augustine of Hippo, Max Scheler, Karl Barth, and more, O'Donovan shows how ethics has lost its heart and how the field can regain its purpose. He completes his lectures by integrating theology and philosophy to recover ethics. Contemplating theological concepts such as creation, divine law, and justification undergirds ethics by generating "existential wonder."

With characteristic warmth and scholarly precision, O'Donovan reinvigorates ethical argument with theological insight. Scholars and students of Christian ethics will find his lectures equally provocative and inspiring.