ONE:Would you prevent crimes, then see that enlightenment accompanies liberty. The evils that flow from knowledge are in inverse ratio to its diffusion; the benefits directly proportioned to it. A bold impostor, who is never a commonplace man, is adored by an ignorant people, despised by an enlightened one. Knowledge, by facilitating comparisons between objects and multiplying mens points of view, brings many different notions into contrast, causing them to modify one another, all the more easily as the same views and the same difficulties are observed in others. In the face of a widely diffused national enlightenment the calumnies of ignorance are silent, and authority, disarmed of pretexts for its manifestation, trembles; whilst the rigorous force of the laws remains unshaken, no one of education having any dislike to the clear and useful public compacts which secure the common safety, when he compares the trifling and useless liberty sacrificed by himself with the sum-total of all the liberties sacrificed by others, who without the laws might have been hostile to himself. Whoever has a sensitive soul, when he contemplates a code of well-made laws, and finds that he has only lost the pernicious liberty of injuring others, will feel[246] himself constrained to bless the throne and the monarch that sits upon it.
TWO: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.
