Counter-proposition: Some production of material things is not possible according to merely mechanical laws.

In this latter aspect, as objective principles for the determinant Judgement, they would contradict each other; and consequently one of the two propositions must necessarily be false. We shall then, it is true, have an antinomy, but not of Judgement; there will be a conflict in the legislation of Reason. Reason, however, can prove neither the one nor the other of these fundamental propositions, because we can have a priori no determinant principle of the possibility of things according to mere empirical laws of nature.

On the other hand, as regards the first-mentioned maxims of a reflective Judgement, they involve no contradiction in fact. For if I say, I must