Can Science Determine Moral Values? A Reply to Sam Harris

Sam Harris’ new book “The Moral Landscape” is the latest in a series of attempts to provide a new “science of morality.” This essay argues that such a project is unlikely to succeed, using Harris’ text as an example of the major philosophical problems that would be faced by any such theory. In particular, I argue that those trying to construct a scientific ethics need pay far more attention to the tradition of moral philosophy, rather than assuming the debate is simply between a scientific ethics and a “supernatural” ethics provided by religion.