Abstract

This paper makes a transcendental argument. It assumes the normative validity of the instrumental principle, and then investigates the conditions of its validity. Ultimately, it argues that there are three necessary conditions for its validity. Firstly, agents must be rationally capable of regarding themselves as having a single self that possesses the same reasons, ends, and means. Secondly, agents must be rationally capable of distinguishing themselves from other selves that possess ends. Thirdly, these two conditions must actually obtain, which means that we must have a self that has the same reasons, ends, and means, and that such selves must be distinct from one another. The paper fields two arguments in support of these three conditions and then offers an interpretation of the arguments to show that they vindicate all three conditions.