Repugnance and perfection

This article grew out of a BA thesis written several years ago under the supervision of Teruji Thomas. Many thanks to him for his thorough advice on both that thesis and this article. My thanks also to Simon Beard for comments and discussion on that thesis, and to Joe Horton, James Wilson, and two anonymous reviewers for Philosophy & Public Affairs for comments and discussion of this article. I am also grateful to receptive and probing audiences at the UCL Graduate Conference and the London Graduate Moral and Political Philosophy Workshop. This article is dedicated to the memories of Derek Parfit and Josh Parsons, both of whom inspired me to study philosophy.