Christopher Wellman argues that Joel Feinberg fails to grasp the distinction between will theories and interest theories. According to Wellman, this failure leads Feinberg to defend a will theory in “The Nature and Value of Rights” and an interest theory in “The Rights of Animals and Unborn Generations” and therefore to hold an inconsistent theory of rights. Wellman's interpretation of Feinberg is plausible. I will argue that there is another plausible interpretation and that the texts do not allow us to determine which of the two plausible interpretations is correct. I will also argue that this alternative interpretation allows Feinberg to avoid Wellman's charge of inconsistency but has problems of its own. Along the way, I will make some points about how to defend a theory of rights and about the strengths and weaknesses of the will and interest theories of rights. (Wellman holds that choice theories are a subset of will theories. I have argued elsewhere that it is better to see will theories as a subset of choice theories. However, how one cuts up the field is irrelevant to the issue at hand. For the sake of argument, I will assume that Wellman's topology is correct.)