This is the solid and indestructible ground of the maxim, that slavery can exist only by positive law; that it is a local institution; that the right of freedom must first be abolished before slavery can exist.
Editor's note · Context
Mann articulates the principle that slavery can only exist through positive law, and it is inherently a local institution.
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This is the reciprocity of slave law.--to be forever liable to be proved guilty, but never able to prove himself innocent; to be subject to all punishments, but, through his own oath, to no protection.
Has the fact never yet come to the knowledge of the magistrates of the District of Columbia, that the constitution of the United States declares that “excessive bail shall not be required”?
He that chooses to employ a sort of labor that yields only half as much to the hand as another sort would yield, makes a choice that is not only unprofitable, but deeply injurious to his interest.
Even cold, barren New England, though more than twice as thickly peopled, grew in population at a faster rate than these old slave states.





