Abstract

The aim of this paper is to show that the binary notions of reality and negation play an important role in the philosophical agenda of Kant, Maimon and Fichte. The paper has three sections. The first section illustrates the metaphysical significance of Kant’s introduction of the quantitative opposition between reality and negation, which informs the phenomena-noumena distinction and the attribution of intensive magnitude. The second section argues that Maimon’s speculative appropriation of differentials took up Kant’s conception of real opposition between reality and negation but fundamentally revised the theory of space and time to dissolve the problem of applicability in Kant, leading to the consequence of obliterating the pure categories. The third section shows how Fichte inherited the Kantian-Maimonian quantitative opposition of reality and negation in his characterization of the interdetermination between the I and the Not-I and how he developed an immanent account of the relational categories such as causality and substantiality on that basis.