Thus by the practical law which commands the existence of the
highest good possible in a world, the possibility of those objects
of pure speculative reason is postulated, and the objective reality
which the latter could not assure them. By this the theoretical
knowledge of pure reason does indeed obtain an accession; but it
consists only in this, that those concepts which otherwise it had to
look upon as problematical (merely thinkable) concepts, are now
shown assertorially to be such as actually have objects; because
practical reason indispensably requires their existence for the
possibility of its object, the summum bonum, which practically is
absolutely necessary, and this justifies theoretical reason in
assuming them. But this extension of theoretical reason is no
extension of speculative, that is, we cannot make any positive use
of it in a theoretical point of view. For as nothing is accomplished
in this by practical reason, further than that these concepts are real
and actually have their (possible) objects, and nothing in the way
of intuition of them is given thereby (which indeed could not be
demanded), hence the admission of this reality does not render any
synthetical proposition possible.
Pages:
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264