‘Equality’, Proceedings of the Aristotelian Society 56 (1955–6), 301–26

• repr. as ‘Equality as an Ideal’ in Frederick A. Olafson (ed.), Justice and Social Policy: A Collection of Essays (Englewood Cliffs, NJ, 1961: Prentice-Hall), the Bobbs-Merrill Reprint Series in Political Science, no. 68812, and Concepts and Categories