" The rule that governs the behaviour of all capitalists is, then, 'accumulation for accumulation's sake, production for production's sake' (Capital, vol. 1, p. 595). And this rule, enforced by competition, operates independently of the individual will of the capitalist. It is the hallmark of individual behaviour, and thereby stamps itself as the distinguishing characteristic of all members in the class of capitalists. It also binds all capitalists together, for they all have a common need: to promote the conditions for progressive accumulation. "

― David Harvey , The Limits to Capital