 Noumena in a positive sense are simply noumena as Kant originally defined that notion in the A edition: objects of an intellectual (non-sensible) intuition. The negative concept of noumena, however, is simply the concept of objects that are not spatiotemporal (not objects of our sensible intuition, namely space and time). But then it follows that things in themselves are noumena in the negative sense, retrospectively clarifying the passage from the A edition quoted immediately above, where Kant seems to draw from the “Transcendental Aesthetic” the conclusion that there are noumena: the concept of appearance requires that something appears, and this must be a negative noumena.