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For he cannot rid himself of his own will, which may
change in future years and repudiate the current arrangement. The
concept of “voluntary slavery” is indeed a contradictory one, for so
long as a laborer remains totally subservient to his master’s will
voluntarily, he is not yet a slave since his submission is voluntary;
whereas, if he later changed his mind and the master enforced his
slavery by violence, the slavery would not then be voluntary.