Abstract

The debate about the relation between the (phenomenal) psychological realm and our (noumenal) rational freedom is moot because Kant in fact argues that psychological determinism is undemonstrable, even in the phenomenal realm. Kant contends that causality is strictly related to substance. Also, the three Analogies form a mutually integrated set of principles. Kant’s Paralogisms show we have no knowledge of a substantial self. If we have no evidence of a substantial self, then we cannot apply any of the Principles of the Analogies to the self. Consequently, we cannot justify any determinate causal judgments in psychology. Hence determinism is in principle unjustifiable within even empirical psychology.