sition will free the theory of the latter from all ambiguity, and place it clearly before our eyes in its true nature.
System of the Principles of the Pure Understanding.
SECTION FIRST.
Of the Supreme Principle of all Analytical Judgments.
Whatever may be the content of our cognition, and in whatever manner our cognition may be related to its object, the universal, although only negative condition of all our judgments is that they do not contradict themselves; otherwise these judgments are in themselves (even without respect to the object) nothing. But although there may exist no contradiction in our judgment, it may nevertheless connect conceptions in such a manner, that they do not correspond to the object, or without any grounds either à priori or à posteriori for arriving at such a judgment, and thus, without being self-contradictory, a judgment may nevertheless be either false or groundless.
Now, the proposition, “No subject can have a predicate that contradicts it,” is called the principle of contradiction, and is an universal but purely negative criterion of all truth. But it belongs to logic alone, because it is valid of cognitions, merely as cognitions, and without respect to their content, and declares that the contradiction entirely nullifies them. We can also, however, make a positive use of this principle, that is, not merely to banish falsehood and error (in so far as it rests upon contradiction), but also for the cognition of truth. For if the judgment is analytical, be it affirmative or negative, its truth must always be recognizable by means of the principle of contradiction. For the contrary of that which lies and is cogitated as conception in the cognition of the object will be always properly negatived, but the conception itself must always be affirmed of the object, inasmuch as the contrary thereof would be in contradiction to the object.
We must therefore hold the principle of contradiction to be the universal and fully sufficient principle of all analytical cognition. But as a sufficient criterion of truth, it has no further
