  Other consequentialists are more skeptical about moral intuitions, so they seek foundations outside morality, either in non-normative facts or in non-moral norms. Mill (1861) is infamous for his “proof” of the principle of utility from empirical observations about what we desire (cf. Sayre-McCord 2001). In contrast, Hare (1963, 1981) tries to derive his version of utilitarianism from substantively neutral accounts of morality, of moral language, and of rationality (cf. Sinnott-Armstrong 2001). Similarly, Gewirth (1978) tries to derive his variant of consequentialism from metaphysical truths about actions.