20世纪伦理学起始于摩尔直觉主义对自然主义的批判。自然主义坚持道德判断可以还原为事实判断,直觉主义则声称“善”不可定义。情感主义反过来把道德判断看作主要是一种情感判断,力图从价值方面而不是经验方面来理解道德判断的性质问题。非认知主义进一步发展了情感主义的命令性语句样武,并由此揭示出造成传统伦理学谬误的根源。 Twentieth-century ethics began with Moore intuitionist critique of naturalism. Naturalism insists that moral judgment can be reduced to factual judgment, while intuitionism claims that “goodness” is not definable. Emotionalism, in turn, considers moral judgments primarily as emotional judgments that seek to understand the nature of moral judgments in terms of value rather than experience. Non-cognitivism further develops the imperatives of emotional order, thereby revealing the root causes of the fallacy of traditional ethics.