Had I to address nations still destitute of the light of religion, I would say that there is yet another considerable difference between adultery and other crimes. For it springs from the abuse of a constant and universal human impulse, an impulse anterior to, nay, the cause of the institution of society; whereas other crimes, destructive of society, derive their origin rather from momentary passions than from a natural impulse. To anyone cognisant of history and his kind, such an impulse will seem to be equivalent in the same climate to a constant quantity; and if this be so, those laws and customs which seek to diminish the sum-total will be useless or dangerous, because their effect will be to burthen one half of humanity with its own needs and those of others; but those laws, on the contrary, will be the wisest, which following, so to speak, the gentle inclination of the plain, divide the total amount, causing it to ramify into so many equal and small portions, that aridity or overflowing are equally prevented everywhere. Conjugal fidelity is always proportioned to the number and to the freedom of marriages. Where marriages are governed by hereditary prejudices, or[229] bound or loosened by parental power, there the chains are broken by secret intrigue, in despite of ordinary morality, which, whilst conniving at the causes of the offence, makes it its duty to declaim against the results. But there is no need of such reflections for the man who, living in the light of true religion, has higher motives to correct the force of natural effects. Such a crime is of so instantaneous and secret commission, so concealed by the very veil the laws have drawn round it (a veil necessary, indeed, but fragile, and one that enhances, instead of diminishing, the value of the desired object), the occasions for it are so easy, and the consequences so doubtful, that the legislator has it more in his power to prevent than to punish it. As a general rule, in every crime which by its nature must most frequently go unpunished, the penalty attached to it becomes an incentive. It is a quality of our imagination, that difficulties, if they are not insurmountable nor too difficult, relatively to the mental energy of the particular person, excite the imagination more vividly, and place the object desired in larger perspective; for they serve as it were as so many barriers to prevent an erratic and flighty fancy from quitting hold of its object; and, while they compel the imagination to consider the latter in all its bearings, it attaches itself more closely to the pleasant[230] side, to which our mind most naturally inclines, than to the painful side, which it places at a distance. CHAPTER XXIX. DUELS.

Infamy is a sign of public disapprobation, depriving a criminal of the good-will of his countrymen, of their confidence, and of that feeling almost of fraternity that a common life inspires. It does not depend upon the laws. Hence the infamy which the laws inflict should be the same as that which arises from the natural relations of things, the same as that taught by universal morality, or by that particular morality, which depends on particular systems, and sets the law for ordinary opinions or for this and that nation. If the one kind of infamy is different from the other, either the law loses in public esteem, or the ideas of morality and honesty disappear, in spite of declamations, which are never efficacious against facts. Whoever declares actions to be infamous which are in themselves indifferent, detracts from the infamy of actions that are really in themselves infamous.

Beccaria entertains a similar despair of truth. The history of mankind represents a vast sea of errors, in which at rare intervals a few truths only float uppermost; and the durability of great truths is as that of a flash of lightning when compared with the long[9] and dark night which envelops humanity. For this reason he is ready to be the servant of truth, not her martyr; and he recommends in the search for truth, as in the other affairs of life, a little of that philosophical indolence which cares not too much about results, and which a writer like Montaigne is best fitted to inspire.[6]

It may be said that all such absurdities are past; that the Jews, the Athenians, the Chinese, the Europeans of the middle ages can scarcely be cited as reasonable beings; that they had no rational theory of punishment, and that their errors have been long since discarded. But at least their example suggests that even in our own system there may be inconsistencies and blemishes which custom and authority hide from our eyes.

Some remnants of the laws of an ancient conquering people, which a prince who reigned in Constantinople some 1,200 years ago caused to be compiled, mixed up afterwards with Lombard rites and packed in the miscellaneous volumes of private and obscure commentatorsthese are what form that set of traditional opinions which from a great part of Europe receive nevertheless the name of laws; and to this day it is a fact, as disastrous as it is common, that some opinion of Carpzovius, some old custom pointed out by Clarus, or some form of torture suggested in terms of complacent ferocity by Farinaccius, constitute the laws, so carelessly followed by those, who in all trembling ought to exercise their government over the lives and fortunes of men. These laws, the dregs of the most barbarous ages, are examined in this book in so far as regards criminal jurisprudence, and I have dared to expose their faults to the directors of the public happiness in a style which may keep at[112] a distance the unenlightened and intolerant multitude. The spirit of frank inquiry after truth, of freedom from commonplace opinions, in which this book is written, is a result of the mild and enlightened Government under which the Author lives. The great monarchs, the benefactors of humanity, who are now our rulers, love the truths expounded, with force but without fanaticism, by the obscure philosopher, who is only roused to indignation by the excesses of tyranny, but is restrained by reason; and existing abuses, for whosoever well studies all the circumstances, are the satire and reproach of past ages, and by no means of the present age or of its lawgivers. 2. When the proofs of a fact all depend equally on a single one, their number neither increases nor diminishes the probability of the fact in question, because their total value resolves itself into that of the single one on which they depend.