My main philosophical interests are in ethics, metaethics, and political philosophy. I have been working on two main projects. The first is about the relationship between agency and normativity. I am interested in but somewhat skeptical about "constitutivist" metaethical theories according to which one can explain reasons or normativity in terms of what is constitutive of action or agency, so I have tried to identify problems with existing constitutivist theories (such as those of Christine Korsgaard, Michael Smith, and David Velleman) and to explore alternative forms of constitutivism and ways of arguing for constitutivism. The second is about the implications (if any) of moral uncertainty for what people rationally and morally ought to do. For example, I have argued that an appropriate response to moral uncertainty about distributive justice is to favor a sufficientarian approach to distributive justice over alternatives such as libertarianism and egalitarianism. I have also been exploring what some deontological moral theories or theoretical approaches, such as Kantianism and contractualism, should say about whether an agent’s moral uncertainty affects what they morally ought to do.