"It smacks of what I believe Maynard Keynes used to call, with reference to the deliberations of academic bodies, the Principle of Equal Unfairness: that if you can't do a good turn to everybody in a certain situation, you shouldn't do it to anybody."
Bernard Williams, 'Morality and the Emotions' in Problems of the Self: Philosophical Papers 1956-1972. Cambridge: Cambridge University Press, 1973, p. 226.
This sounds absolutely correct! Many thanks to Fabian Freyenhagen for the quote.