At the dawn of traditional history economics is already operating. Men are working to live, on a foundation which has been in great part modified by their work and with tools which are completely their work. And from that moment they have struggled among themselves to conquer each from the other a superior position in the use of these artificial means; that is to say, they have struggled among themselves whether as serfs and masters, subjects and lords, conquered and conquerors, exploited and exploiters, both where they have progressed and where they have retrograded and where they have halted in a form which they have not been capable of outgrowing, but never have they returned to the animal life by the complete loss of their artificial foundation. Historical science has, then, as its first and principal object the determination and the investigation of this artificial foundation, its origin, its composition, its changes and its transformations. To say that all this is only a part and a prolongation of nature, is to say a thing which by its too abstract and too generic character has no longer any meaning. The human race, in fact, lives only in earthly conditions, and we cannot suppose it to be transplanted elsewhere. Under these conditions it has found from its very first beginnings down to the present day the immediate means necessary for the development of labor, that is to say, for its material progress as for its inner formation. These natural conditions were and they are always indispensable to the sporadic agriculture of the nomads, who sometimes cultivated the earth merely for the pasturage of animals, as well as for the refined products of intensive modern horticulture. These earthly conditions, precisely as they have furnished the different sorts of stones suited for the fabrication of the first weapons, furnish now also, with coal, the elements of the great industry; precisely as they gave the first laborers osiers and willows to plait, they give now all the materials necessary to the complicated technique of electricity.