 It remains to be determined whose happiness matters. One might imagine that it is the utility of the agent. This would be the ethical counterpart to psychological egoism. However, Bentham’s answer, and the answer characteristic of utilitarianism, is the happiness of all (Principles I 4–10). Bentham says that our account of right action, obligation, and duty ought to be governed by the principle of utility (I 9–10). This seems to imply that an action is right or obligatory just insofar as it promotes utility. But then the right or obligatory act would seem to be the one that promotes utility the most or maximizes utility. For these reasons, it is common to understand Bentham as combining psychological hedonism and hedonistic utilitarianism.