Now if Kant, as he here pretends, and also apparently did in earlier
cases, had merely inferred the thing in itself, and that with the great
inconsistency of an inference absolutely forbidden by himself, what a
remarkable accident would it then be that here, where for the first time
he approaches the thing in itself more closely and explains it, he should
recognise in it at once the _will_, the free will showing itself in the
world only in temporal manifestations! I therefore really assume, though
it cannot be proved, that whenever Kant spoke of the thing in itself, in
the obscure depths of his mind he already always indistinctly thought of
the will. This receives support from a passage in the preface to the
second edition of the “Critique of Pure Reason,” pp. xxvii. and xxviii.,
in Rosenkranz’s edition, p. 677 of the Supplement.
For the rest, it is just this predetermined solution of the sham third
conflict that affords Kant the opportunity of expressing very beautifully
the deepest thoughts of his whole philosophy. This is the case in the
whole of the “Sixth Section of the Antinomy of Pure Reason;” but, above
all, in the exposition of the opposition between the empirical and the
intelligible character, p. 534-550; V. 562-578, which I number among the
most admirable things that have ever been said by man. (As a supplemental
explanation of this passage, compare a parallel passage in the Critique of
Practical Reason, p. 169-179 of the fourth edition, or p. 224-231 of
Rosenkranz’s edition.) It is yet all the more to be regretted that this is
here not in its right place, partly because it is not found in the way
which the exposition states, and therefore could be otherwise deduced than
it is, partly because it does not fulfil the end for which it is there—the
solution of the sham antinomy. The intelligible character, the thing in
itself, is inferred from the phenomenon by the inconsistent use of the
category of causality beyond the sphere of all phenomena, which has
already been sufficiently condemned. In this case the will of man (which
Kant entitles reason, most improperly, and with an unpardonable breach of
all use of language) is set up as the thing in itself, with an appeal to
an unconditioned ought, the categorical imperative, which is postulated
without more ado.