The transition within the transition: the Übergang from the Selbstsetzungslehre to the ether proofs in Kant’s Opus postumum

Abstract Recent literature on Kant’s Opus postumum has typically focused on two parts of the drafts: the ether proofs and the Selbstsetzungslehre. Eckart Förster’s interpretation is representative of this tendency and, moreover, presents the Selbstsetzungslehre as the culmination of Kant’s late project. By contrast, I argue that the drafts of fascicles X/XI, written in between the ether proofs and the Selbstsetzungslehre, are of primary importance for understanding the Opus postumum. Through a close reading of a page from fascicle XI, I show that Kant attempts to resolve problems internal to the Selbstsetzungslehre and the ether proofs by presenting a transition from the former to the latter. I advocate a renewed appreciation of the centrality of fascicles X/XI, insofar as the Opus postumum drafts aspire to a science of transition.