Since the cosmological arguments reason from what we experience, and hence the phenomenal world, to an inferred cause, and hence the noumenal world, since the noumenal world lies beyond our knowledge we can never know what's there.
12.
Furthermore, for Kant, the existence of a noumenal world limits reason to what he perceives to be its proper bounds, making many questions of traditional metaphysics, such as the existence of God, the soul, and free will unanswerable by reason.
13.
Kant argued that our minds give structure to the raw materials of reality, and that the world is therefore divided into the phenomenal world ( the world we experience and know ), and the noumenal world ( the world as it is " in itself, " which we can never know ).
