laatste zinnen (65)
Some equalities are relevant to justice and some are not and the same can be said of inequalities. If equality of treatment was always just, whatever circumstances, then it would be true that B was not merely secondary, it would be unnecessary. But in morals it is a simple truth that some differences make a real difference and consequently we insist that B should sometimes override or displace A. At any rate, from a descriptive and analytic point of view, it seems correct to conclude, that, while A and B are opposed, they are equally necessary to a full and proper account of justice.
J.I. Macadam, The precepts of justice, in: Mind : a quarterly review of psychology and philosophy, ed. by Gilbert Ryle, vol. LXXVII, n° 307, July 1968