TWO: One of the greatest preventives of crimes is, not the cruelty of the punishments attached to them, but their infallibility, and consequently that watchfulness on the part of the magistrates and that inexorable severity on the part of the judge which, to be a useful virtue, must coincide with a mild system of laws. The certainty of a punishment, moderate though it be, will ever make a stronger impression than the fear of another, more terrible, perhaps, but associated with the hope of impunity; for even the least evils when certain always terrify mens minds, and hope, that gift of heaven, which often makes up to us for everything, always throws into the distance the idea of greater evils, especially when its force is increased by impunity, which avarice and weakness so often grant.
TWO:[153]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.
