THREE: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.Some courts promise impunity to an accomplice in a serious crime who will expose his companions, an expedient that has its drawbacks as well as its advantages. Among the former must be counted the national authorisation of treachery, a practice which even criminals detest; for crimes of courage are less pernicious to a people than crimes of cowardice, courage being no ordinary quality, and needing only a beneficent directing force to make it conduce to the public welfare, whilst cowardice is more common and contagious, and always more self-concentrated than the other. Besides, a tribunal which calls for the aid of the law-breaker proclaims its own uncertainty and the weakness of the laws themselves. On the other hand, the advantages of the practice are, the prevention[164] of crimes and the intimidation of the people, owing to the fact that the results are visible whilst the authors remain hidden; moreover, it helps to show that a man who breaks his faith to the laws, that is, to the public, is likely also to break it in private life. I think that a general law promising impunity to an accomplice who exposes a crime would be preferable to a special declaration in a particular case, because in this way the mutual fear which each accomplice would have of his own risk would tend to prevent their association; the tribunal would not make criminals audacious by showing that their aid was called for in a particular case. Such a law, however, should accompany impunity with the banishment of the informer. But to no purpose do I torment myself to dissipate the remorse I feel in authorising the inviolable laws, the monument of public confidence, the basis of human morality, to resort to treachery and dissimulation. What an example to the nation it would be, were the promised impunity not observed, and were the man who had responded to the invitation of the laws dragged by learned quibbles to punishment, in spite of the public troth pledged to him! Such examples are not rare in different countries; neither, therefore, is the number small, of those who consider a nation in no other light than in that of a complicated machine, whose springs the cleverest and the strongest move at their will. Cold and insensible to all that forms the delight of[165] tender and sensitive minds, they arouse, with imperturbable sagacity, either the softest feelings or the strongest passions, as soon as they see them of service to the object they have in view, handling mens minds just as musicians do their instruments.