In the Cartesian tradition of discussing the structure of the micro-judgement “I think” Kant‘s treatment deserves extraordinary attention. Under the idiomatic heading of self-affection he delivers a micro-analysis of this judgment, contributing in a unique way to the clarification of a singular case of self-knowledge: In this case the thinking subject 1. thematises the act of judging “I think” by conferring on this act the specific logical, categorical form, 2. intuits this act under the temporal form of successively using “I...” (...) as subject and “… think” as predicate, 3. identifies him-/herself — at the same time — with the subject logically structuring this act as well as with the subject intuiting the successively existing subject of this judging act, and 4. recognises him-/herself as identical in these two different cognitive roles. By this very analysis Kant shows that the eminent micro-judgement-act “I think” has the complex, though paradigmatic substructure of each human subject recog­nising his/her identity as thinking / judging and temporally existing while thinking / judging. (shrink)