After the Franco-German Year Books had been discontinued, Marx, recognising the importance of economics, studied English and French systems of political economy with still greater zeal than before, and continued his studies in Socialism and history with remarkable steadiness of purpose. No longer now did he show signs of hesitation or wavering; he knew exactly what he wanted. He had left behind him that period of ideological speculation when he was still a disciple of Hegel, and he was impelled, as in the autumn of 1837, to envisage, from his new standpoint, the past and the future. He takes such a survey in "The Holy Family," which had its genesis in the autumn of 1844, and to which Engels also furnished a slight contribution. It is a settling of accounts with his former friend and master, Bruno Bauer, and his brother Edgar, who had not been able to break away from Hegel. The aim of the book was to force the Young Hegelians into the path of social criticism, to urge them forward and prevent them from falling into stereotyped and abstract ways of thinking. It is not easy reading. In it Marx has compressed the knowledge he then had of philosophy, history, economics, and Socialism in concentrated and sharply-cut form. Besides the excellent sketch of English and French materialism, which among other things discloses in a few short but pregnant sentences the connection between this and English and French Socialism, "The Holy Family" contains the germs of the materialistic conception of history as well as the first attempt to give a social revolutionary interpretation to the class struggle between Capital and Labour. In the Introduction to the present book a quotation from "The Holy Family" has been given. Speaking against Bauer's conception of history, Marx says: "Or can he believe that he has arrived even at the beginning of a knowledge of historical reality so long as he excludes science and industry from the historical movements? Or does he really think that he can understand any period without having studied, for example, the industries of that period, the immediate means of production of life itself?... In the same way as he separated thought from the senses, the soul from the body, and himself from the world, so he separates history from science and industry, and he does not see the birthplace of history in coarse, material production upon earth but in the nebulous constructions in the heavens."--("Posthumous Works," Vol. II., pp. 259-60.)