The towns, to which people were so astonished that there should be a desire to emigrate, were the only centres, rare and widely scattered as they were, in which life in society was then known. But to what extent does it not appear to have been adulterated, and attenuated by animal and vegetable life? Another fossil peculiar to these regions is the artisan. Was the relation of the worker to his employer, of the artisan class to the other classes of the population, of these classes between themselves a really social relation? Not the least in the world! Certain sophists, who were called economists, and who were to our sociologists of to-day what the alchemists formerly were to the chemists or the astrologers to the astronomers, had given credit, it is true, to this error--that society essentially consists in an exchange of services. From this point of view, which, moreover, is quite out of date, the social bond could never be closer than that between the ass and the ass driver, the ox and drover, the sheep and the shepherd. Society, we now know, consists in the exchange of reflections. Mutually to ape one another, and by dint of accumulated apings diversely combined to create an originality is the important thing. Reciprocal service is only an accessory. That is why the urban life of former days being principally founded on the organic and natural, rather than on the social relation of producer to consumer, or of workman to employer, was itself only a very imperfect kind of social life, and accordingly the source of endless disagreements.