THREE:Persons guilty of lesser crimes are usually either punished in the obscurity of a prison, or transported, as an example to nations who have given no offence, to a distant and therefore almost useless servitude. Since the gravest crimes are not those which men are tempted to commit on the spur of the moment, the public punishment of a great misdeed will be regarded by most men as strange and of impossible occurrence; but the public punishment of lighter crimes, to which mens thoughts more readily incline, will make an impression, which, at the same time that it diverts the mind from them, will restrain it still more from crimes of greater gravity. Punishments should not only be proportioned to one another and to crimes in point of force, but also in the mode of their infliction.In view of these principles it will appear strange (to anyone who does not reflect, that reason has, so to speak, never yet legislated for a nation), that it is just the most atrocious crimes or the most secret and chimerical onesthat is, those of the least probabilitywhich are proved by conjectures or by the weakest and most equivocal proofs: as if it were the interest of the laws and of the judge, not to search for the truth, but to find out the crime; as if the danger of condemning an innocent man were not so much the greater, the greater the probability of his innocence over that of his guilt.
THREE:But undoubtedly punishment, although in its origin and present intention vindictive, must exercise a certain preventive force against crime, and this preventive force can scarcely be estimated, for that which is prevented is, of course, not seen. But the efficiency of punishment as a deterrent is proportioned to its certainty, and there is a large element of uncertainty that can never be eliminated. For every malefactor there are two hopes: first, that he may escape detection or apprehension; secondly, that he may escape conviction. That his hopes of impunity are not without reason greater than his fears of punishment the following facts attest.
THREE:But although the laws of every country thus recognise in different degrees the retributive nature of punishment, by their constant attention to its apportionment to crime, there is another corollary of the desirability of a just proportion between the two, which has never been, nor is ever likely to be, accepted: namely, that from the point of view of the public interest, which in theory is the only legal view, it is no mitigation of a crime that it is a first offence, nor any aggravation of one that it is the second.That Penology is still only in its experimental stage as a science, in spite of the progress it has made in recent times, is clear from the changes that are so constantly being made in every department of our penal system. We no longer mutilate nor kill our criminals, as our ancestors did in the plenitude of their wisdom; we have ceased to transport them, and our only study now is to teach them useful trades and laborious industry. Yet whether we shall better bring them to love labour by compulsory idleness or by compulsory work, whether short imprisonment or long is the most effective discipline, whether seclusion or association is least likely to demoralise them, these and similar questions have their answers in a quicksand of uncertainty. This only may experience be said to have yet definitely proved, that very little relation exists in any country between the given quantity of crime and the quantity or severity of punishment directed to its prevention. It has taken thousands of years to establish this truth, and even yet it is but partially recognised over the world.