 But in what does our duty consist? Price distinguishes between what he terms abstract and practical virtue, or what was later (by Prichard and Ross) called objective and subjective duty. An agent’s objective duty is what she is morally required to do, given the actual facts of the case; her subjective duty lies in what she should do, given her reasonable beliefs about the facts of the case. It is for succeeding or failing to do one’s subjective duty that one should be praised or blamed, for an imperfect agent cannot be required to avoid all errors of fact.