In Marx on Capitalism, James Furner offers a new answer to the fundamental question of Marxism: can a thesis connecting capital, the state and classes with the desirability of socialism be developed from an analysis of the commodity? The Interaction-Recognition-Antinomy Thesis is anchored in a systematic retranslation of Marx’s writings. It provides an antinomy-based strategy for grounding the value of social humanity in working-class agency, facilitates a dialectical derivation of political representation, and condemns capitalism as unjust without appeal to rights.