No More Learning

{BOOK_1|CHAPTER_2 ^paragraph 15}

These categories of freedom- for so we choose to call them in
contrast to those theoretic categories which are categories of
physical nature- have an obvious advantage over the latter, inasmuch
as the latter are only forms of thought which designate objects in
an indefinite manner by means of           concept of every possible
intuition; the former, on the contrary, refer to the determination
of a free elective will (to which indeed no exactly corresponding
intuition can be assigned, but which has as its foundation a pure
practical a priori law, which is not the case with any concepts
belonging to the theoretic use of our cognitive faculties); hence,
instead of the form of intuition (space and time), which does not
lie in reason itself, but has to be drawn from another source, namely,
the sensibility, these being elementary practical concepts have as
their foundation the form of a pure will, which is given in reason
and, therefore, in the thinking faculty itself.