At the heart of Sophia Moreau's theory of wrongful discrimination is the moral duty to treat others as equals. This article raises some challenges regarding the contours of this duty and suggests some ways to make the theory stronger. In particular, it suggests that we incorporate a cosmopolitan view of the duty's scope, that we illuminate the features at the basis of individuals’ equal moral status to determine its grounds, and that we identify some considerations about important interests to articulate its contents. The relation between Moreau's theory and human rights discourse is also briefly examined, and more engagement with the latter is recommended.
