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.
The object of the preliminary chapters is to place the historical importance of the original in its just light, and to increase the interest of the subjects it discusses.For instance, the injury to the public is no greater the hundredth time a man steals a rabbit than it is the first. The public may be interested in the prevention of poaching, but it is not interested in the person of the poacher, nor in the number of times he may have broken the law. The law claims to be impersonalto treat offences as they affect the State, not as they affect individuals; to act mechanically, coldly, and dispassionately. It has, therefore, simply to deal with the amount of injury done by each specific offence, and to affix to it its specific penalty, regardless of all matters of moral antecedents. The repetition of an offence may make its immorality the greater, but its[88] criminality remains the same, and this only is within the province of the law.
