ONE:Some courts promise impunity to an accomplice in a serious crime who will expose his companions, an expedient that has its drawbacks as well as its advantages. Among the former must be counted the national authorisation of treachery, a practice which even criminals detest; for crimes of courage are less pernicious to a people than crimes of cowardice, courage being no ordinary quality, and needing only a beneficent directing force to make it conduce to the public welfare, whilst cowardice is more common and contagious, and always more self-concentrated than the other. Besides, a tribunal which calls for the aid of the law-breaker proclaims its own uncertainty and the weakness of the laws themselves. On the other hand, the advantages of the practice are, the prevention[164] of crimes and the intimidation of the people, owing to the fact that the results are visible whilst the authors remain hidden; moreover, it helps to show that a man who breaks his faith to the laws, that is, to the public, is likely also to break it in private life. I think that a general law promising impunity to an accomplice who exposes a crime would be preferable to a special declaration in a particular case, because in this way the mutual fear which each accomplice would have of his own risk would tend to prevent their association; the tribunal would not make criminals audacious by showing that their aid was called for in a particular case. Such a law, however, should accompany impunity with the banishment of the informer.�� But to no purpose do I torment myself to dissipate the remorse I feel in authorising the inviolable laws, the monument of public confidence, the basis of human morality, to resort to treachery and dissimulation. What an example to the nation it would be, were the promised impunity not observed, and were the man who had responded to the invitation of the laws dragged by learned quibbles to punishment, in spite of the public troth pledged to him! Such examples are not rare in different countries; neither, therefore, is the number small, of those who consider a nation in no other light than in that of a complicated machine, whose springs the cleverest and the strongest move at their will. Cold and insensible to all that forms the delight of[165] tender and sensitive minds, they arouse, with imperturbable sagacity, either the softest feelings or the strongest passions, as soon as they see them of service to the object they have in view, handling men��s minds just as musicians do their instruments.The question, therefore, arises, Does crime depend to any appreciable extent on imprisonment at all, or on the length or shortness of sentences?