Abstract

This study focuses on the essential difference between Kant’s and Husserl’s transcendental Idealism. In fact, Husserl describes in the «Cartesian Meditations» his own ontological thesis as a «transcendental idealism», in which all sorts of entities have to be constituted by an activity of the transcendental subjectivity, so that we have to regard pure consciousness as the ontological origin of all entities in the world. But this study is interested in the two opposite signications of the Kantian copernican inversion. On the one hand, the Copernican inversion has the same sense as the phenomenological reduction, which implies that Husserl can’t agree with Kant’s presupposition of absolute things in themselves; on the second hand, it involves a relativistic and anthropologistic orientation, so that the aprioristic structures of given objects are founded on the universal structures of finite subjectivity, on pure forms and faculties of human consciousness. At the opposite, Husserl enounces a methodological prescription for any phenomenological elucidation: it is not allowed to presuppose in phenomenology any given faculty or given nature of transcendental subjectivity. This prescription has important consequences on which this study focuses. First the ontological difference between intuitus originarius and intuitus derivatus, in nite and nite type of intuition, doesn’t have any validity: the difference between factual and rational truths only depends on the essence of the truth itself, and doesn’t have its foundation on the ontological difference between creative and receptive sort of intuition. Secondly, this first thesis admits an immediate application on the level of subjective constitution of objects: the modality in which an object appears to the subjectivity doesn’t depend on the universal structure of finite subject, but is exclusively founded on the essence of the object itself, so that it is impossible to consider the aprioristic constitutive structure as a merely subjective structure. Thirdly, in this transcendental phenomenology everything has to be constituted by subjectivity: the aprioristic character of the pure forms of sensibility is not founded on the structure of finite subjectivity, but rather on the essential connection between sensual material and form; so that it is not allowed to presuppose any facticity of time and space; the pure forms of sensibility have to be constituted by a special type of synthesis that we have to elucidate in opposition to other types of higher levels. The profound signication of Husserl’s anticopernican inversion is that the field of transcendental phenomenology consists of the essential form of an eidos ego, which is «more objective than any objectivity», as Levinas said; and that transcendental phenomenology is completely dominated by the principium reddendae rationis.