"If one treats men like cattle, one cannot squeeze out of them more than cattle-like performances. But it then becomes significant that man is physically weaker thanoxen and horses, and that feeding and guarding a slave is, in proportion to theperformance to be reaped, more expensive than feeding and guarding cattle. When treated as a chattel, man renders a smaller yield per unit of cost expended forcurrent sustenance and guarding than domestic animals. If one asks from an unfreelaborer human performances, one must provide him with specifically humaninducements. If the employer aims at obtaining products which in quality andquantity excel those whose production can be extorted by the whip, he must interestthe toiler in the yield of his contribution. Instead of punishing laziness and sloth, he must reward diligence, skill, and eagerness. But whatever he may try in thisrespect, he will never obtain from a bonded worker, i.e., a worker who does notreap the full market price of his contribution, a performance equal to that renderedby a freeman, i.e., a man hired on the unhampered labor market. The upper limitbeyond which it is impossible to lift the quality and quantity of the products andservices rendered by slave and serf labor is far below the standards of free labor.In the production of articles of superior quality an enterprise employing theapparently cheap labor of unfree workers can never stand the competition ofenterprises employing free labor. It is this fact that has made all systems ofcompulsory labor disappear."