TWO: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.
TWO: Our laws prohibit suggestive (leading) questions in a lawsuit: those, that is (according to the doctors of law), which, instead of applying, as they should do,[145] to the genus in the circumstances of a crime, refer to the species; those, in other words, which from their immediate connection with a crime suggest to the accused a direct answer. Questions, according to the criminal lawyers, ought, so to speak, to envelop the main fact spirally and never to attack it in a direct line. The reasons for this method are, either that an answer may not be suggested to the accused which may place him face to face with the charge against him, or perhaps because it seems unnatural for him directly to criminate himself. But, whichever of these reasons it may be, the contradiction is remarkable between the existence of such a custom and the legal authorisation of torture; for what interrogatory can be more suggestive than pain? The former reason applies to the question of torture, because pain will suggest to a strong man obstinate silence, in order that he may exchange the greater penalty for the lesser, whilst it will suggest to a weak man confession, in order that he may escape from present torment, which has more influence over him than pain which is to come. The other reason evidently applies too, for if a special question leads a man to confess against natural right, the agonies of torture will more easily do the same. But men are more governed by the difference of names than by that of things.
