In this episode of ACC, Prof. Harvey examines Marx’s use of the notion of abstractions to develop a general theory of capital and his critique of capitalism. Harvey identifies different levels of abstraction used by Marx: scale, perspective of production, perspective of circulation and distribution and the contradictions that exist between production and circulation. Marx, Harvey asserts, also differentiates between the concrete abstractions of a capitalist system, such as price of commodities and wages rates, and theoretical abstractions, the behavior of capitalists who are endlessly driven by competition and the quest for profits.