Whosoever disturbs the public peace, or obeys not the laws, that is, the conditions under which men bear with and defend one another, ought to be excluded from society, that is, to be banished from it.
The first consequence of these principles is, that the laws alone can decree punishments for crimes, and this authority can only rest with the legislator, who represents collective society as united by a social contract. No magistrate (who is part of society) can justly inflict punishments upon another member of the same society. But since a punishment that exceeds the legally fixed limit is the lawful punishment plus another one, a magistrate can, under no pretext of zeal or the public good, add to the penalty already decreed against a delinquent citizen.Such was the reasoning which for nearly half a century governed the course of English history, and which for all that time it was a heresy to dispute.Even the idea of public utility as the final test and standard of morality is derived from Beccaria, and the famous expression, the greatest happiness of the greatest number, occurs, in capital letters, in the very first page of the Delitti e delle Pene.[30] Bentham himself fully acknowledged this. Priestley was the first, he says, unless it was Beccaria, who taught my lips to pronounce this sacred truth: that the[47] greatest happiness of the greatest number is the foundation of morals and happiness. And with reference to his idea of the measurable value of different pains and pleasures, he says: It was from Beccarias little treatise on Crimes and Punishments that I drew, as I well remember, the first hint of this principle, by which the precision and clearness and incontestableness of mathematical calculations are introduced for the first time into the field of morals.That the scruple to convict diminishes the certainty of punishment, and therefore raises hopes of impunity, is illustrated by the case of two American brothers who, desirous to perpetrate a murder, waited till their victim had left their State, in which capital punishment had been abolished, and had betaken himself to a State which still retained it, before they ventured to execute their criminal intention. That such reluctance to convict is often most injurious to[42] the public is proved by the case of a woman at Chelmsford who some years ago was acquitted, in spite of strong evidence, on a charge of poisoning, and who, before her guilt was finally proved, lived to poison several other persons who would otherwise have escaped her arts.[27]Against this general uncertainty of punishment, which no severity in the law can affect or make up for, the only certainty of punishment dependent on the law is in the event of conviction. But even this certainty is of a very qualified nature, for it depends on sentiments of due proportion between a crime and its penalty, which in no two men are the same. Every increase of severity in punishment diminishes its certainty, since it holds out to a criminal fresh hopes of impunity from the clemency of his judges, prosecutors, or jury. Whosoever disturbs the public peace, or obeys not the laws, that is, the conditions under which men bear with and defend one another, ought to be excluded from society, that is, to be banished from it.