These supposedly transcendental predicates of things are nothing other than logical requisites and criteria of all cognition of things in general, and ground it in the categories of quantity, namely, the categories of unity, plurality, and totality; yet these categories must really have been taken as material, as belonging to the possibility of things itself, when in fact they should have been used in a merely formal sense, as belonging to the logical requirements for every cognition; thus these criteria of thinking were carelessly made into properties of things in themselves.