Wherever the means of production have developed, to a certain point, wherever the artificial foundation has acquired a certain consistency, and wherever the social differentiations and their resulting antitheses have created the need, the possibility and the conditions of an organization more or less stable or unstable, there, always and necessarily, appear premeditated designs, political views, plans of conduct, systems of law and finally maxims and general and abstract principles. In the circle of these products, and of these derived and complex developments of the second degree, spring up also the sciences and arts, philosophy and learning, and history as a literary fashion of production. This circle is what the rationalists and the ideologists, ignorant of its real foundations, have called, and call, in an exclusive fashion, civilization. And, in fact, it has happened, and it happens, that some men, and especially professional scientists, lay or clerical, have found, and find, the means of intellectual livelihood in the closed circle of the reflex and secondary products of civilization, and that they have been able and are able consequently to submit all the rest to the subjective view which they have elaborated under these conditions; that is, the origin and explanation of all the ideologies. Our doctrine has definitely outgrown the visual angle of ideology. The premeditated designs, the political views, sciences, systems of law, etc., instead of being the means and the instrument of the explanation of history, are precisely what require to be explained, because they are derived from determined conditions and situations. But that does not mean that they are pure appearances, soap bubbles. If they are things which have been developed and derived, that does not imply that they are not real things; and that is so true that they have been, for centuries, to the unscientific consciousness, and to the scientific consciousness still on the way towards its formation, the only ones which really existed. But that is not all.