For the mode of representation based on final causes is only a subjective condition of the exercise of our reason in cases where it is not seeking to know the proper judgement to form of objects arranged merely as phenomena, but is bent rather on referring these phenomena, principles and all, to their supersensible substrate, for the purpose of recognizing the possibility of certain laws of their unity, which are incapable of being represented by the mind otherwise than by means of ends (of which reason also possesses examples of the supersensuous type).