As a rational being, he now places his behavior under the control of abstractions. He will no longer tolerate being carried away by sudden impressions, by intuitions. First he universalizes all these impressions into less colorful, cooler concepts, so that he can entrust the guidance of his life and conduct to them. Everything which distinguishes man from the animals depends upon this ability to volatilize perceptual metaphors in a schema, and thus to dissolve an image into a concept. For something is possible in the realm of these schemata which could never be achieved with the vivid first impressions: the construction of a pyramidal order according to castes and degrees, the creation of a new world of laws, privileges, subordinations, and clearly marked boundaries—a new world, one which now confronts that other vivid world of first impressions as more solid, more universal, better known, and more human than the immediately perceived world, and thus as the regulative and imperative world. Whereas each perceptual metaphor is individual and without equals and is therefore able to elude all classification, the great edifice of concepts displays the rigid regularity of a Roman columbarium and exhales in logic that strength and coolness which is characteristic of mathematics. Anyone who has felt this cool breath [of logic] will hardly believe that even the concept—which is as bony, foursquare, and transposable as a die—is nevertheless merely the residue of a metaphor, and that the illusion which is involved in the artistic transference of a nerve stimulus into images is, if not the mother, then the grandmother of every single concept.