This dissertation is about first person thought. More specifically, it’s about the interface between two initially tempting features of first person thought. The first is its pure reflexivity; first person thought is thought about its thinker no matter what else might be the case with the her at the time of thinking. First person thought, that is to say, doesn’t depend on the vagaries of contingent empirical facts about the subject at the time the thought is thought; it will always just be thought that is about its thinker. The second has to do with a special cluster of ways we have of being aware of ourselves as ourselves, as it is sometimes put. No further cognitive work is required, for instance, when I come to know in the normal way abo...