Interpreting Hume in these terms not only serves to fill what looks like a large gap in his naturalistic program, it also avoids distorting his own wider ethical commitments by imposing a narrower, rationalistic conception of moral capacity into his naturalistic framework. Beyond this, interpreting moral capacity in these more sentimentalist terms is both philosophically and psychologically more satisfying and plausible. On an account of this kind, there exists a close and essential relationship between being responsible, where this is understood in terms of being an appropriate target of moral sentiments or reactive attitudes, and being able to hold oneself and others responsible, where this is understood as the ability to experience and entertain moral sentiments. It is a merit of Hume’s system, so interpreted, that it avoids “over-intellectualizing” not only what is involved in holding a person responsible, but also what is involved in being a responsible agent.