The function [of objective thinking] is to reduce all phenomena which bear witness to the union of subject and world, putting in their place the clear idea of the object as in itself and of the subject as pure consciousness. It therefore severs the links which unite the thing and the embodied subject, leaving only sensible qualities to make up our world (to the exclusion of the modes of appearance which we have described), and preferably visual qualities, because these give the impression of being autonomous, and because they are less directly linked to our body and present us with an object rather than introducing us into an atmosphere. But in reality all things are concretions of a setting, and any explicit perception of a thing survives in virtue of a previous communication with a certain atmosphere.