‘The Uncomfortable Question of Class’. Presented to the conference of the Political Science Association Marxism Specialist Group, Manchester, September 2016. This presaged my later critique of the standard Marxist approach to Volume III, which was to view this as a purely technical work of Economic High Theory. In fact, this volume is about the relation between revenue and class – where class is properly understood not just as the conflict between two great amalgams of all workers on the one hand and all property-owners on the other, but also as a relation between the various property-owning classes (landowners, merchants, bankers etc), whose share of surplus value is determined by the specific source of their revenue.