If, and only if, workers can and actually do work longer than the time necessary to maintain themselves and the means of production, will there arise a continuing social surplus; the time spent by workers in producing this surplus, their surplus labor-time, is therefore the real basis of capitalist #profit.
[Anwar #Shaikh - 1977 - #Marx's Theory of Value and the Transformation Problem]
[Anwar #Shaikh - 1977 - #Marx's Theory of Value and the Transformation Problem]