“While daily experience taught impressively that under capitalism real wage rates and the wage earners’ standard of living were steadily rising, while it became from day to day more obvious that the traditional walls separating the various strata of the population could no longer be preserved because the social improvement in the conditions of the industrial workers demolished the vested ideas of social rank and dignity, … doctrinaires announced that old customs and social convention determine the height of wage rates. Only people blinded by preconceived prejudices and party bias could resort to such an explanation in an age in which industry supplies the consumption of the masses again and again with new commodities hitherto unknown and makes accessible to the average worker satisfactions of which no king could dream in the past.”

—Ludwig von Mises, Human Action