TWO:No law ought to be promulgated that has not force to back it, or that the nature of things deprives of validity; and as minds are ruled by opinion, which[224] itself follows the slow and indirect impressions of legislation, whilst it resists those that are direct and violent, the most salutary laws become infected with the contempt felt for useless laws, and are regarded rather as obstacles to be surmounted than as the deposit of the public welfare.It is, however, probable that the frequency of any crime bears little or no relation to the punishment affixed to it. Every criminal begins a new career, in which he thinks less of the nature of his punishment than of his chances of eluding it. Neither tradition nor example count with him for much in his balance of the chances in his own favour. The law can never be so certain in its execution as it is uncertain in its application, and it is the examples of impunity, not of punishment, to which men turn when they violate the law. So that whether the punishment for murder be an excruciating death, as in ancient Rome, or a mere fine, as in ancient England, the motives for escape are always the same, the means to effect it are always the same, and the belief in his power to effect it is correspondingly powerful in every criminal guilty of homicide.
