THREE:I speak of probability in connection with crimes, which, to deserve punishment, ought to be proved. But the paradox is only apparent, if one reflects that, strictly speaking, moral certainty is only a probability, but a probability which is called certainty, because every sensible person necessarily assents to it, by a force of habit which arises from the necessity of acting, and which is prior to all speculation. The certainty requisite for certifying that a man is a criminal is, therefore, the same that determines everyone in the most important actions of his life. The proofs of a crime may be divided into ��perfect�� and ��imperfect,�� the former being of such a[136] nature as exclude the possibility of a man��s innocence, and the latter such as fall short of this certainty. Of the first kind one proof alone is sufficient for condemnation; of the second, or imperfect kind, as many are necessary as suffice to make a single perfect proof; that is to say, when, though each proof taken separately does not exclude the possibility of innocence, yet their convergence on the same point makes such innocence impossible. But let it be noted that imperfect proofs, from which an accused has it in his power to justify himself and declines to do so, become perfect. This moral certainty of proofs, however, is easier to feel than to define with exactitude: for which reason I think that the best law is one which attaches to the chief judge assessors, taken by lot, not by selection, there being in this case more safety in the ignorance which judges by sentiment than in the knowledge which judges by opinion. Where the laws are clear and precise, the function of a judge consists solely in the certification of fact. If for searching out the proofs of a crime ability and cleverness are required, and if in the presentation of the result clearness and precision are essential, all that is required to judge of the result is simple and common good sense, a faculty which is less fallacious than the learning of a judge, accustomed as he is to wish to find men guilty and to reduce everything to an artificial system borrowed from his studies. Happy the nation where the[137] laws are not a science! It is a most useful law that everyone shall be judged by his equals, because where a citizen��s liberty and fortune are at stake those sentiments which inequality inspires should have no voice; that feeling of superiority with which the prosperous man regards the unfortunate one, and that feeling of dislike with which an inferior regards his superior, have no scope in a judgment by one��s equals. But when the crime in question is an offence against a person of a different rank from the accused, then one half of the judges should be the equals of the accused, the other half equals of the plaintiff, that so, every private interest being balanced, by which the appearances of things are involuntarily modified, only the voice of the laws and of truth may be heard. It is also in accordance with justice that an accused person should have power up to a certain point of refusing judges whom he may suspect; and if he is allowed the exercise of this power for some time without opposition, he will seem to condemn himself. Verdicts should be public, and the proofs of guilt public, in order that opinion��which is, perhaps, the only bond of society there is��may place a check on outbursts of force and passion, and that the people may say, ��We are not slaves without defence��: a feeling which both inspires them with courage and is as good as a tribute to a sovereign who understands his real interest. I refrain from pointing out other details and precautions which[138] require similar regulations. I should have said nothing at all, had it been necessary for me to say everything. It is better to prevent crimes than to punish them. This is the chief aim of every good system of legislation, which is the art of leading men to the greatest possible happiness or to the least possible misery,[243] according to calculation of all the goods and evils of life. But the means hitherto employed for this end are for the most part false and contrary to the end proposed. It is impossible to reduce the turbulent activity of men to a geometrical harmony without any irregularity or confusion. As the constant and most simple laws of nature do not prevent aberrations in the movements of the planets, so, in the infinite and contradictory attractions of pleasure and pain, disturbances and disorder cannot be prevented by human laws. Yet this is the chimera that narrow-minded men pursue, when they have power in their hands. To prohibit a number of indifferent acts is not to prevent the crimes that may arise from them, but it is to create new ones from them; it is to give capricious definitions of virtue and vice which are proclaimed as eternal and immutable in their nature. To what should we be reduced if everything had to be forbidden us which might tempt us to a crime? It would be necessary to deprive a man of the use of his senses. For one motive that drives men to commit a real crime there are a thousand that drive them to the commission of those indifferent acts which are called crimes by bad laws; and if the likelihood of crimes is proportioned to the number of motives to commit them, an increase of the field of crimes is an increase of the likelihood of their commission. The majority of laws are nothing but[244] privileges, or a tribute paid by all to the convenience of some few.

THREE:This, then, is the way to avoid confounding the relations and invariable nature of things, which, being unlimited by time and in ceaseless operation, confounds and overturns all narrow regulations that depart from it. It is not only the arts of taste and pleasure which have for their universal principle the faithful imitation of nature; but the art of politics itself, at least that which is true and permanent, is subject to this general maxim, since it consists in nothing else than the art of directing in the best way and to the same purposes the immutable sentiments of mankind.