What Best Serves Class Interests? This Is the Point Where “Scientific” Socialism and the “Sociology of Knowledge” Show Their Mysticism

But since Marxism and the sociology of knowledge see in the subjective theory of value nothing more than a final ideological attempt to save capitalism, we wish to limit ourselves to an immanent critique of their theses. As Marx himself admits, the proletarian has not only class interests, but other interests that are opposed to them. The Communist Manifesto says: “The organization of the proletarians into a class and thereby into a political party is repeatedly frustrated by the competition among the workers themselves.” Therefore, it is not true that the proletarian has only class interests. He also has other interests that are in conflict with them. Which, then, should he follow? The Marxist will answer: “Of course, his class interests, for they stand above all others.” But this is no longer by any means a matter “of course.” As soon as one admits that action in conformity with other interests is also possible, the question is not one concerning what “is,” but what “ought to be.” Marxism does not say of the proletarians that they cannot follow interests other than those of their class. It says to the proletarians: You are a class and should follow your class interests; become a class by thinking and acting in conformity with your class interests. But then it is incumbent upon Marxism to prove that class interests ought to take precedence over other interests.

Even if we were to assume that society is divided into classes with conflicting interests and if we were to agree that everyone is morally obliged to follow his class interests and nothing but his class interests, the question would still remain: What best serves class interests? This is the point where “scientific” socialism and the “sociology of knowledge” show their mysticism. They assume without hesitation that whatever is demanded by one’s class interests is always immediately evident and unequivocal. The comrade who is of a different opinion can only be a traitor to his class.

What reply can Marxian socialism make to those who, precisely on behalf of the proletarians, demand private ownership of the means of production, and not their socialization? If they are proletarians, this demand alone is sufficient to brand them as traitors to their class, or, if they are not proletarians, as class enemies. Or if, finally, the Marxists do choose to engage in a discussion of the problems, they thereby abandon their doctrine; for how can one argue with traitors to one’s class or with class enemies, whose moral inferiority or class situation makes it impossible for them to comprehend the ideology of the proletariat?

--Ludwig von Mises, Epistemological Problems of Economics, trans. George Reisman, ed. Bettina Bien Greaves (Indianapolis: Liberty Fund, 2013), 170-171.