“A _universal material_ criterion of truth is not possible; the
phrase is indeed self-contradictory. For being _universal_ it would
necessarily abstract from all distinction of objects, and yet being
a material criterion, it must be concerned with just this
distinction in order to be able to determine whether a cognition
agrees with the very object to which it refers, and not merely with
some object or other, by which nothing would be said. But
_material_ truth must consist in this agreement of a cognition with
the definite object to which it refers. For a cognition which is
true in reference to one object may be false in reference to other
objects. It is therefore absurd to demand a universal material
criterion of truth, which is at once to abstract and not to
abstract from all distinction of objects.
“But if we ask for a universal _formal_ criterion of truth, it is
very easy to decide that there may be such a criterion. For formal
truth consists simply in the agreement of the cognition with itself
when we abstract from all objects whatever, and from every
distinction of objects. And hence the universal formal criteria of
truth are nothing but universal logical marks of agreement of
cognitions with themselves, or, what is the same thing, with the
general laws of the understanding and the Reason. These formal
universal criteria are certainly not sufficient for objective
truth, but yet they are to be viewed as its _conditio sine qua
non_. For before the question, whether the cognition agrees with
the object, must come the question, whether it agrees with itself
(as to form). And this is the business of logic.”[661]
The remaining paragraphs[662] of Section III. may similarly be compared
with the following passage from an earlier section of Kant’s
_Logic_:[663]
“Analytic discovers, by means of analysis, all the activities of
reason which we exercise in thought. It is therefore an analytic of
the form of understanding and of Reason, and is justly called the
logic of truth, since it contains the necessary rules of all
(formal) truth, without which truth our knowledge is untrue in
itself, even apart from its objects. It is therefore nothing more
than a canon for deciding on the formal correctness of our
knowledge.
“Should we desire to use this merely theoretical and general
doctrine as a practical art, that is, as an organon, it would
become a _dialectic_, _i.e. a logic of semblance_ (_ars sophistica
disputatoria_), arising out of an abuse of the analytic, inasmuch
as by the mere logical form there is contrived the semblance of
true knowledge, the characters of which must, on the contrary, be
derived from agreement with objects, and therefore from the
_content_.