  Formulations of the neutrality constraint, such as the ones distinguished here, figure in recent influential versions of social contract theory, most notably that of Rawls and his followers (Nagel 1991; Rawls 1993; Barry 1995). These views represent the chief contemporary rival to perfectionist political theory. In developing an account of political morality, these modern day contractualists instruct us to bracket our full understanding of the human good. Only by so doing, is it possible to present an account of political morality that has a hope of securing the allegiance of citizens who hold very different conceptions of the good.