Since 2006 I have held the Melden Chair in Moral Philosophy in the Philosophy Department at the University of California, Irvine. I work in a number of related areas. I've written monographs on the philosophy of social phenomena (On Social Facts, 1989) and the problem of political obligation (A Theory of Political Obligation: Membership, Commitment, and the Bonds of Society, 2006). I am working on a book on rights with special reference to claim-rights. Another topic on which I have published fairly extensively is collective moral responsibility. The key idea that for me links these themes is that of what I refer to as "joint commitment". I c…

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