But our point at present is only the duality ascribed to the Judgment by saying that it essentially deals with _two_ things or groups of things. Jevons even says [1] that every Judgment is a comparison of two things--though these “things” are really, it would seem, groups of things. [2] We thus have it impressed upon our minds that there is one “thing” corresponding to the Subject-word (or clause) of the Propositional sentence, and another “thing” corresponding to the Predicate-word (or clause), and that these are somehow separate, like two railway carriages, till we bring them together by the coupling-link of the copula. This is a very inconvenient way of looking at the matter. It is not true that all Judgment is comparison, in the proper and usual sense of the word. It is not true that Judgment involves two things; two or more things may be mentioned in a Judgment, but they cannot correspond respectively to the Subject and Predicate. It is a real Comparison if you say, “A.B. is taller than C.D.,” but C.D. is here not a term in the Judgment. The one person, A.B., is qualified by the ideal content “taller than C.D.,” and the idea of A.B. so qualified is referred to, or discriminated within, perceptive reality. Comparison is a rather complex process, and consists in a cross-reference by which each of two objects is judged according to a standard furnished by the other; but this complex process is not necessary to all Judgment, and cannot be expressed with complete convenience in a single Judgment. And in {106} any case the two objects that enter into the comparison do not correspond to two essential parts of Judgment. [1] _Elementary Lessons in Logic_, p. 61. [2] _Ibid_. p. 62.