Abstract

By a generalization of Parfit’s argument for the unimportance of personal identity in survival, it is argued that the practical significance that appears to attach to our identity belongs to the relation of direct control, which we exercise through will. What explains the special concern and moral responsibility that normally pertains only to ourselves is that it is ordinarily just ourselves whom we animate by our decisions. But thought experiments involving amnesia and replication seem to show that direct control only contingently coexists with personal identity. If so, the practically important question is whom we can control directly and the metaphysical question of our identity may be of only theoretical interest. The practical importance of the metaphysics of personal identity is defended by showing that our beliefs about which things we are determine what we can will. Such beliefs influence emotions of fear and the like and circumscribe our sense of responsibility.