Benedetto Croce,
Historical materialism and the economics of Karl Marx
“ It is, however, evident that idealism or absolute morality is a necessary postulate of socialism. Is not the interest which prompts the formation of a concept of surplus-value a moral interest, or social if it is preferred? Can surplus value be spoken of in pure economics? Does not the labourer sell his labour-power for exactly what it is worth, given his position in existing society? And, without the moral postulate, how could we ever explain Marx's political activity, and that note of violent indignation and bitter satire which is felt in every page of Das Kapital? ”
