The latter runs into contradiction from the start for wanting, on the one hand, to hold on to perception and have before it things that have real being, and, on the other hand, for ascribing sensible existence to imperceptible things that are determined through reflection; the minute parts and the pores are at the same time supposed to be a sensible existence and their positedness is spoken of as if it were the same as the reality which belongs to color, heat, etc.