And just as it calls for free trade at home not out of regard for particular classes but out of regard for the welfare of all, so it demands free trade in international relations not for the sake of foreigners but for the sake of one's own people. Interventionist economic policy takes another standpoint. It sees irreconcilable antagonisms in relations among states. Only thus can it be explained that even the opponents of socialism more or less accepted socialist doctrines. That appears most clearly in the position of the opponents of socialism on the problem of the class struggle.
Marxian socialism preaches the struggle of the proletariat against the bourgeoisie.
Elsewhere this battle cry is opposed by that of the solidarity of interests. Not so in Germany. Here the proletarians are confronted by the bourgeoisie as a class. The united bourgeois parties confront the proletarian party. They do not see that in this way they recognize the argumentation of the Marxists as correct and thereby make their struggle hopeless.