 ‘Justice’ has sometimes been used in a way that makes it virtually indistinguishable from rightness in general. Aristotle, for example, distinguished between ‘universal’ justice that corresponded to ‘virtue as a whole’ and ‘particular’ justice which had a narrower scope (Aristotle, Nicomachean Ethics, Book V, chs. 1–2). The wide sense may have been more evident in classical Greek than in modern English. But Aristotle also noted that when justice was identified with ‘complete virtue’, this was always ‘in relation to another person’. In other words, if justice is to be identified with morality as such, it must be morality in the sense of ‘what we owe to each other’ (see Scanlon 1998). But it is anyway questionable whether justice should be understood so widely. At the level of individual ethics, justice is often contrasted with charity on the one hand, and mercy on the other, and these too are other-regarding virtues. At the level of public policy, reasons of justice are distinct from, and often compete with, reasons of other kinds, for example economic efficiency or environmental value.