The possibility that there are duties which do not correspond to any rights is allowed by the definition of rights, and is generally acknowledged by legal and political theorists. 
Yet the view that such duties must ultimately <tag "515648">derive</> from fundamental rights or at least be based on the interests of people other than those subject to the duty has become sufficiently widespread that it is important to explain why it is rational to expect that there are fundamental moral duties which do not derive solely from the rights and interests of their potential beneficiaries, or which have no potential beneficiaries at all.   

