[C]ommon-sense deontological morality, standing between egoism and consequentialism, sometimes seems to be caught in a kind of normative squeeze, with its rationality challenged in parallel ways by (as it were) the maximizers of the right and of the left: those who think that one ought always to pursue one’s good, and those who are convinced that one should promote the good of all.
Samuel Scheffler, ‘Agent-Centred Restrictions, Rationality, and the Virtues’, Mind, vol. 94, no. 375 (July, 1985), p. 415