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科思嘉的回溯论证是对康德人性公式的一种有广泛影响的解读。她将康德的人性概念解读为理性选择的能力,并确定为绝对价值,从而表达出这一道德法则公式的规范性。但本文认为她的论证存在着缺陷:一是将价值完全归于主观选择的赋予难以获得辩护,二是回溯论证中存在着价值的构成性条件和规范性条件之间的冲突,三是将人的合理选择能力作为绝对价值,并没有把握到人性公式的规范性。据此,本文认为科思嘉撇开康德的形而上学立场,从实践合理性的层面构建康德人性公式的努力是不成功的。
Coorska’s retrospective argument is a widely influenced interpretation of Kant’s human formula. She interprets Kant’s concept of human nature as the ability of rational choice and determines it as absolute value, thus expressing the normative nature of this formula of moral law. However, this article argues that her argument is flawed. First, it is difficult to obtain the justification to completely assign the value to the subjective choice. Second, there is a conflict between the constitutive and the normative conditions of value in the retrospective argument. Third, Reasonable ability to choose as the absolute value, and did not grasp the normative nature of human formula. Accordingly, this article argues that Cosscard’s efforts to construct Kant’s formula of human nature from an aspect of practical rationality are unsuccessful without Kant’s metaphysical standpoint.