He is the author of a number of books on animal rights, including Animal Rights: A Christian Perspective (1976), Christianity and the Rights of Animals (1987), Animal Theology (1994), and Why Animal Suffering Matters: Philosophy, Theology, and Practical Ethics (2009).
Er ist Autor von Büchern über Tierrechte, darunter: Animal Rights: A Christian Perspective (1976), Christianity and the Rights of Animals (1987), Animal Theology (1994) und Why Animal Suffering Matters: Philosophy, Theology, and Practical Ethics (2009).