 This fundamental idea of equal respect for all persons and of the equal worth or equal dignity of all human beings (Vlastos 1962) is widely accepted (Carter 2011, but see also Steinhoff 2015). In a period in which there is not agreement across the members of a complex society to any one metaphysical, religious, or traditional view (Habermas 1983, p. 53, 1992, pp. 39–44), it appears impossible to peacefully reach a general agreement on common political aims without accepting that persons must be treated as equals. As a result, moral equality constitutes the ‘egalitarian plateau’ for all contemporary political theories (Kymlicka 1990, p. 5).