Abstract

The very possibility of reflecting upon the relationship between philosophy and science, as a problem, is relatively recent. It goes back only to the Renascence, to the separation which at that time occurred between philosophy and science, and which appears to have found its finished form in the philosophy of Descartes. The Cartesian philosophy is indeed not only a philosophy that distinguishes itself strictly from science; it is at the same time a philosophy which develops, in a systematic and decisive manner, the categories in which the opposition philosophy-science is thought: the categories of thought and space. Philosophy will be, in this perspective, the development of what is contained in the idea of thought, the res cogitans, based upon the fundamental experience of the Cogito. And, as we know, this idea leads to the philosophical rediscovery of the idea of God and of creation. It also contains, by the intermediary of the notion of God and the relation of creation, a kind of transcendental justification of the world and, in particular, of the world of spatial extension. With this world of pure extension philosophy as such has not to deal, but it must offer a justification of it. This precisely is one of the aims of the metaphysical reflection of Descartes, and the philosophical role, if such an expression is permissible, of the idea of God in his system.