An error, not less common than it is contrary to the object of society—that is, to the consciousness of personal security—is 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 examinatio............