マッキーの功利主義

―ヘアの功利主義との差異の考察を通じて―

抄録

Mackie criticized traditional utilitarianism from the standpoint of moral skepticism, adopted rule utilitarianism in a broad sense as a new moral principle, and advocated a new form of utilitarianism that he termed “rule-right-duty-disposition utilitarianism.” This paper argues that the utilitarianism supported by Mackie is essentially equivalent to the preference utilitarianism advocated by Hare, which predates Mackie’s formulation.