Abstract

Kant is entitled to his claim that determinism and incompatibilist moral responsibility coexist if he is interpreted as holding that each agent qua noumenon is atemporally responsible for the particular causal laws which necessitate the actions of that agent qua temporal phenomenon. The fact of causal necessitation is imposed on the empirical world a priori by theoretical reason, and it serves to objectively temporally order phenomena. This imposition is purely formal, however, and explains only the epistemically necessary features of the causal series---i.e. the universal fact that there are deterministically necessitating causal laws. Theoretical reason also generates the empirical, a posteriori types under which particular causal laws appear. But theoretical reason is not responsible for the fact that some particular causal laws obtain rather than some others, i.e. it is not responsible for the fact that some particular laws are actual rather than merely possible. Noumena are responsible for the obtaining of particular causal laws, and some noumena are human agents. ;Qua noumena, we are responsible for the obtaining of the particular causal laws which necessitate our phenomenal actions. Our free actions qua noumena are choices of maxims, not choices of causal laws. Our choices of maxims appear in inner sense as temporally extended phenomena of empirical psychology, necessitated by particular causal laws. The practical types under which we choose our maxims and the theoretical a posteriori types and laws under which these choices appear to us are entirely different, and we cannot know why they correlate as they do. But we can know that they correlate: if our choices of maxims had been different, they would have yielded different appearances. We can explain how these appearances could have been different in terms of the fact that noumena are responsible for the obtaining of particular causal laws. If our noumenal choices had been different, their appearances would have been necessitated according to different laws.