Abstract

The goal of this paper is to interpret Fichte’s terminology of ‚light‘ and ‚imaging‘ in the WL-1804-ii as a rendition of transcendental principles. This analysis is intended as a contribution to the discussion concerning the theoretical status and methodology of the later doctrines of science. i begin with an exposition of four criteria for transcendentally constitutive principles: 1. presuppositional character, 2. constitutivity, 3. categorial difference between conditions and conditioned, 4. immanent justification. The systematic function of ‘light’ is exemplarily reconstructed according to these criteria. The focus of analysis lies on the fourth criterion, which is framed as the philosophical problem which Fichte’s conception of a ‘law of imaging’ in the 24th and 25th lectures answers to. The ‘law of imaging’ is reconstructed as a special form of performative self-validation which is intended to satisfy the criterion of immanent justification. A further upshot of this reading is a reappraisal of Fichte’s treatment of light’s perpetual ‘objectivization’.