This paper explores analyzing criminal responsibility from the Humean position that blame is for character traits. If untoward acts indicate undesirable character traits, then the agent is blameworthy; if they do not, then the actor is not blameworthy — he has an excuse. A distinctive feature of this approach is that that voluntariness of acts is irrelevant to determining blameworthiness.This analysis is then applied to a variety of issues in criminal law. Mens supports inferences to character traits, and the Humean (...) approach provides a reason for rejeting strict criminal liability. The Humean approach also helps resolve a number of issues about attempts, such as punishment for impossible attempts and the defense of abandonment. It also supports the broad outlines of the defense of mistake and provides a third alternative in the Wooton-Hart debate over punishment and treatment. (shrink)