It is often said that justice requires equality. Which kind of equality justice requires is, of course, a matter of dispute: it is widely held that in a just society there must be equality before the law, and equality of opportunity; many have claimed that justice requires equality of concern for the welfare of each person; and some have argued that significant inequalities in the allocation of resources must be avoided. And, of course, many believe that justice requires public affairs to be conducted through democratic institutions-for only such arrangements express an equality of political status, and seek to provide an equality of influence.