No.60 Referenced from ~ Part2 - Chapter 1 - Break

What is the concept of the thing in itself as the negation of phenomena?

The dualistic worldview of "phenomenon and thing-in-itself" in "Critique of Pure Reason" was identified with the logical division of "the knowable and the unknowable," making the Christian concept of revelation, which presupposes that transcendence can be related to immanence, impossible.

However, if the thing-in-itself is thus conceived as the negative concept of a phenomenon, that is, if the thing-in-itself is derived as the negation of the concept of a phenomenon defined as "sensory and causal," then by De Morgan's law, "non-sensible or non-causal" follows. As a result, three kinds of concept of the thing-in-itself arise.

 (a) That which is not sensory but causal

 (b) That which is sensory but not causal

 (c) That which is neither sensory nor causal

However, thing-in-itself so far have only been discussed as (c).