We left Marx in Paris, and on returning to him, we find him engaged--as indeed we usually do when his history comes into notice--in a threefold warfare. Besides his general war against the arrangements of modern society, he is always carrying on a bitter and implacable war against the Prussian Government, and is often engaged in controversy--sometimes very personal--with foes of his own philosophical or revolutionary household. After the cessation of the _Deutsche Französische Jahrbücher_, Marx edited a paper called _Vorwärts_, and in this and other journals open to him, he attacked the Prussian administration so strongly that that administration complained to Guizot, who gave him orders to quit France. His more personal controversy at this time arose out of one of the schisms of the Young Hegelians, and he and his friend Friedrich Engels wrote a pamphlet--"Die Heilige Familie"--against the Hegelian Idealism, and especially against Bruno Bauer, who had offended him--says Erdmann, in his "History of Philosophy"--at once as Jew, as Radical, and as journalist. When expelled from France, he went to Brussels, where he was allowed to continue his war upon the Prussian Government without interference, till the revolution of 1848. During this period he devoted his attention more particularly than hitherto to commercial subjects, and published in 1846 his "Discours sur le Libre-échange," and in 1847 his "Misère de la Philosophie," a reply to Proudhon's "Philosophie de la Misère"--both in French.