Body, which is grounded in the divisibility of space, is therefore infinitely divisible without consisting, however, of infinitely many parts. We have been overlooking the distinction between mathematical and dynamical syntheses of appearance. In the dynamical, there may be a presupposition compatible with the pretensions of reason. In the dynamical series of sensible conditions, a heterogeneous condition, not itself a part of the series, but purely intelligible, and as such outside the series, can be allowed. The empirically unconditioned is also non-sensible and therefore can satisfy understanding and reason.
Causality is either according to nature or arises from freedom.
In nature all causes have their cause because they exist in time. Each cause must come into being in time. The practical concept of freedom is the will's independence of coercion through sensuous impulses. It is based on the transcendental idea of freedom. The denial of transcendental freedom must involve the elimination of all practical freedom.