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The slave received subsistence--clothing and shelter--and the wage-earner who could get more than these out of his wages was rarely fortunate. The rate of wages, except in new countries and under special conditions and for skilled workers, kept at about the subsistence point, quite as often dropping below as rising above. The main difference was that the master expended the subsistence wage of the chattel slave for him while the earner expended it for himself.
— EDWARD BELLAMY