Kant’s Copernican Revolution
Intelligible world is the span of rationality, that is, all that can be derived by reason generate the intelligible world. And sensibility is the capacity to be passively affected by objects. So by sensible world we mean all the sensuous experience we have. Now it is to see that reason itself moves by its own laws independent of how an individual comprehends them. Only in this sense, intelligible world must be independent of human understanding. It is also independent of sensible world as sensual datum should not affect the integrity of reason. But then how can we have any understanding of the intelligible world if it does not affect us? That is how a can we have a priori knowledge of reason? We can not. Intelligible world can be grasped only through sensible world, through its passive effect on us. Human understanding is not a passive action of receiving sensuous data only, it is the active process of synthesizing these data. In this activity lies the intelligibility of the “world”...