Thus it is thought that justice is equality; and so it is, but not for all persons, only for those that are equal. Inequality also is thought to be just; and so it is, but not for all, only for the unequal. We make bad mistakes if we neglect this for whom when we are deciding what is just. The reason is that we are making judgements about ourselves, and people are generally bad judges where their own interests are involved.
It is true that there is a thing crudely called charity, which means charity to the deserving poor; but charity to the deserving is not charity at all, but justice. It is the undeserving who require it, and the ideal either does not exist at all, or exists wholly for them.
Although it may be difficult in theory to know what is just and equal, the practical difficulty of inducing those to forbear who can, if they like, encroach, is far greater, for the weaker are always asking for equality and justice, but the stronger care for none of these things.
Settlements may be temporary, but the action of the nations in the interest of peace and justice must be permanent. We can set up permanent processes. We may not be able to set up permanent decisions.
Between friends there is no need for justice, but people who are just still need the quality of friendship; and indeed friendliness is considered to be justice in the fullest sense.