THREE: The reader of this treatise will perceive that I have omitted all reference to a certain class of crime, which has deluged Europe with human blood; a crime which raised those fatal piles, where living human bodies served as food for the flames, and where the blind multitude sought a pleasant spectacle and a sweet harmony from the low dull groans, emitted by wretched sufferers from volumes of black smoke, the smoke of human limbs, whilst their bones and still palpitating entrails were scorched and consumed by the flames. But reasonable men will see that the place, the age, and the subject suffer me not to inquire into the nature of such a crime. It would be too long and remote from my subject to show, how a perfect uniformity of thought ought, contrary to the practice of many countries, to be a necessity in a State; how opinions, which only differ by the most subtle and imperceptible degrees, and are altogether beyond the reach of human intelligence, can[232] yet convulse society, when one of them is not legally authorised in preference to the others; and how the nature of opinions is such, that, whilst some become clearer by virtue of their conflict and opposition, (those that are true floating and surviving, but those that are false sinking to oblivion,) others again, with no inherent self-support, require to be clothed with authority and power. Too long would it be to prove, that howsoever hateful may seem the government of force over human minds, with no other triumphs to boast of but dissimulation and debasement, and howsoever contrary it may seem to the spirit of gentleness and fraternity, commanded alike by reason and the authority we most venerate, it is yet necessary and indispensable. All this should be taken as clearly proved and conformable to the true interests of humanity, if there be anyone who, with recognised authority, acts accordingly. I speak only of crimes that spring from the nature of humanity and the social compact; not of sins, of which even the temporal punishments should be regulated by other principles than those of a narrow philosophy.There are three sources of the moral and political principles which govern mankind, namely, revelation, natural law, and social conventions. With regard to their principal object there is no comparison between the first and the other two, but they all resemble one another in this, that they all three conduce to the happiness of this present mortal life. To consider the different relations of social conventions is not to exclude those of revelation and natural law; rather it is the thousandfold changes which revelation and natural law, divine and immutable though they be, have undergone in the depraved mind of man, by his own fault, owing to false religions and arbitrary notions of virtue and vice, that make it appear necessary to examine, apart from all other considerations, the result of purely human conventions, expressed or implied, for the public need and welfare: this being an idea in which every sect and every moral system must necessarily agree; and it will always be a laudable endeavour, which seeks to constrain the headstrong and unbelieving to conform to the principles that induce men to live together in society. There are, then, three distinct kinds of virtue and vicethe religious, the natural, and the political. These three kinds ought never to conflict, although all the consequences and duties that flow from any one of them do not necessarily flow from the others. The natural law does not require all that revelation requires,[114] nor does the purely social law require all that natural law requires; but it is most important to distinguish the consequences of the conventional lawthat is, of the express or tacit agreements among menfrom the consequences of the natural law or of revelation, because therein lies the limit of that power, which can rightly be exercised between man and man without a special mandate from the Supreme Being. Consequently the idea of political virtue may, without any slur upon it, be said to be variable; that of natural virtue would be always clear and manifest, were it not obscured by the stupidity or the passions of men; whilst the idea of religious virtue remains ever one and the same, because revealed directly from God and by Him preserved.
