Abstract

In this paper I argue that I argue that motivational internalism should not be driving metaethics. I first show that many arguments for motivational internalism beg the question by resting on an illicit appeal to internalist assumptions about the nature of reasons. Then I make a distinction between weak internalism and the weakest form of internalism. Weak internalism allows that agents fail to act according to their normative judgments when they are practically irrational. I show that when we clarify the notion of practical irrationality it does not support motivational internalism. Weakest internalism only claims that agents are irrational if they entirely lack motiv- ation to do what they judge they ought to. I do not argue against weakest internalism, but I argue that it is not an important view.