That the human reason cannot gain knowledge of the world as a totality – is one of the main results of Kant’s critical philosophy. By the concept of the world – and Kant understood the world primarily as one of the reason’s concepts, an idea – one cannot gain any knowledge because nothing from the sphere of human experience corresponds to this concept. According to Kant, the author tries to show that striving towards transcendent and unconditioned as such is not (...) the crucial problem of metaphysical cosmology but the assumption that one can realize such striving within a theoretical area. Kant, on the contrary, claims that we can fulfill it only practically, so the question concerning the world as a whole for him is a practical question, too. The task of establishing the world as intelligible, as it should be or as a kingdom of ends, is the basis of Kant’s doctrine of the categorical imperative. Kant understands this establishment as an endless task. The author also considers political-historical and religious aspects of Kant’s understanding of the world as an idea, as well as Hegel’s claim that Kant’s thought of the world finally capitulates to the finiteness. (shrink)