The aim of Kant's K. d. U. is the overpassing of the ontological split between the object of the theoretical reason and the object of the practical reason. The rapport between both objects induces the temporalization of the intelligible world. The conflation of nature and freedom realizes the exigence of systematic unity already present in the first Kritik. The notion of finality acts as the categorial instrument to this union. The teleological argument becomes fundamental. This argument evolves through three progressive circles: formal finality (critic of taste) objective-natural finality and objeclive-normal flnality. Kant's production after the K. d. U. stresses this anthropologica1 insight.