TWO:The credibility, therefore, of a witness must diminish in proportion to the hatred, friendship, or close connection between himself and the accused. More than one witness is necessary, because, so long as one affirms and another denies, nothing is proved, and the right which everyone has of being held innocent prevails.[140] The credibility of a witness becomes appreciably less, the greater the atrocity of the crime imputed,[66] or the improbability of the circumstances, as in charges of magic and gratuitously cruel actions. It is more likely, as regards the former accusation, that many men should lie than that such an accusation should be true, because it is easier for many men to be united in an ignorant mistake or in persecuting hatred than for one man to exercise a power which God either has not conferred or has taken away from every created being. The same reasoning holds good also of the second accusation, for man is only cruel in proportion to his interest to be so, to his hatred or[141] to his fear. Properly speaking, there is no superfluous feeling in human nature, every feeling being always in strict accordance with the impressions made upon the senses. In the same way the credibility of a witness may sometimes be lessened by the fact of his being a member of some secret society, whose purposes and principles are either not well understood or differ from those of general acceptance; for such a man has not only his own passions but those of others besides. An error, not less common than it is contrary to the object of societythat is, to the consciousness of personal securityis leaving a magistrate to be the arbitrary executor of the laws, free at his pleasure to imprison a citizen, to deprive a personal enemy of his liberty on frivolous pretexts, or to leave a friend unpunished in spite of the strongest proofs of his guilt. Imprisonment is a punishment which, unlike every other, must of necessity precede the declaration of guilt; but this distinctive character does not deprive it of the other essential of punishment, namely, that the law alone shall determine the cases under which it shall be merited. It is for the law, therefore, to point out the amount of evidence of a crime which shall justify the detention of the accused, and his subjection to examination and punishment. For such detention there may be sufficient proofs in common[133] report, in a mans flight, in a non-judicial confession, or in the confession of an accomplice; in a mans threats against or constant enmity with the person injured; in all the facts of the crime, and similar indications. But these proofs should be determined by the laws, not by the judges, whose decisions, when they are not particular applications of a general maxim in a public code, are always adverse to political liberty. The more that punishments are mitigated, that misery and hunger are banished from prisons, that pity and mercy are admitted within their iron doors, and are set above the inexorable and hardened ministers of justice, the slighter will be the evidences of guilt requisite for the legal detention of the suspected.
