The way to modern Socialism was paved in Germany. The teaching of Hegel cleared the way for the political unrest that spread over Europe in the '40's. Hegel was the proclaimer of the social revolution. He gave sanction to the tenets of destruction. Everything that exists is worth destroying, may be taken as the primary postulate at which the Young Hegelians arrived. Truth does not exist merely in a collection of institutions or dogmatic axioms that could be memorized like the alphabet; truth is in the process of being, of knowing, it has developed through the toilsome evolution of the race, it is found only in experience. Nothing is sacred merely because it exists. Existing institutions are only the prelude to other and better institutions that are to follow. This was roughly the formula that the radical Hegelians blocked out for themselves when they split from the orthodox conservatives in the '30's. In 1843 appeared Feuerbach's _Wesen des Christentums_ (Essence of Christianity), putting the seal of materialism upon the precepts of the Young Hegelians.[14] The God of the utopians was destroyed. Things were not created in harmony and beauty and disordered by man. Things as they are, are the result of evolution, of growth; nothing was created as it is, and even "Religion is the dream of the human mind."[15] Out of this atmosphere of philosophical, religious, and political rebellion sprang the prophet of modern Socialism, Karl Marx,[16] a man whose intellectual endowments place him in the first ranks among Socialists and link his name with other bold intellects of his age who have forced the current of human thought. There have been many books written on Marx, and every phase of his theories has been subjected to academic and popular scrutiny. His treatise, _Capital_, is the sacerdotal book of Socialists. It displays a mass of learning, a diligence of research, and acumen in the marshaling of ideas, and a completeness of literary expression that insures it a lasting place in the literature of social philosophy. Whatever may be said of the narrow dogmatism, of Marx, of his persistence in making the facts fit his preconceived notions, of his materialistic conception of history, or of the technical flaws in his political economy, he will always be quoted as the founder of modern scientific Socialism and the Socialist historian of the capitalistic régime. I must content myself with a bare statement of his theories. The economic basis of Marx is his well-known "Theory of Surplus Value." It was not his theory in the sense that he originated it. Economists like Adam Smith and especially Ricardo, Socialists like the Owenites and the Chartists in England, and Proudhon in France, had enunciated it; and in Germany Rodbertus, a lawyer and scholar of great learning, had elaborated it in his first book, published in 1842. Marx, with German thoroughness, developed this theory in all its ramifications.