Lorenz Stein absorbed the new thought with enthusiasm, and in his fertile mind there was precipitated the creative synthesis between the Western Europe scientific sociological thought and the metaphysical German philosophy of history. The product was called by him the Science of Society (_Gesellschaftswissenschaft_). It is from the writings of Stein that almost all the important developments of German sociologic thought received their first impulses. Karl Marx, especially (as Struve has shown), as well as Schaeffle, Othmar Spann and Gumplowicz are largely indebted to him. It is not my purpose to develop this historical theme. I am concerned only in tracing the development of the sociologic idea of the State. The first effect of this meeting of the two streams of thought was a mischievous confusion of terminology. The writers in Western Europe had long ago lost control of the unification of expressions in thinking. As stated above, the Third Estate began by thinking itself to be “Society,” as opposed to the State. But when the Fourth Estate grew to class consciousness and became aware of its own theoretic existence, it arrogated to itself the term “Society” (as may be seen from the selection of the word Socialism), and it treated the Bourgeoisie as a form of the “State,” of the class state. There were thus two widely differing concepts of “Society.” Yet here was an underlying idea common to both Bourgeoisie and Socialist, since they conceived the State as a collection of privileges arising and maintained _in violation_ of natural law, while Society was thought of as the prescribed form of human union in _conformity_ with natural law. They differed in one essential only, namely, that while the Third Estate declared its capitalistic Society to be the result of the processes of natural law, the Socialists regarded their aims as not yet attained, and proclaimed that the ideal society of the future which would really be the product of the processes of natural law, could only be realized by the elimination of all “surplus value.” Though both were in conflict with regard to fundamentals, both agreed in viewing the “State” as _civitas diaboli_ and “Society” as _civitas dei_. Stein, however, reversed the objectives of the two concepts. As an Hegelian, and pre-eminently a worshipper of the State, he conceived the State as _civitas coelestis_. Society, which he understood to mean only the dominant bourgeoisie Society, he viewed through the eyes of his Socialist friends and teachers, and conceived it as _civitas terrena_.