TWO:3. When the proofs are independent of each otherthat is to say, when they do not derive their value one from the otherthen the more numerous the proofs adduced, the greater is the probability of the fact in question, because the falsity of one proof affects in no way the force of another.English philosophy and legislation, therefore, owe enough to Beccaria for his treatise never to be forgotten among us. Standing, as it does, in reference to law as Bacons Novum Organon to science, or Descartes Principia to philosophy, and representing a return to first principles and rejection of mere precedent in the matter of penal laws, it will never fail to gratify those who, with little admiration for law in the concrete, can yet find pleasure in studying it in the abstract. Most men will turn readily from a system built up, as our own is, of unintelligible distinctions, and based on authority rather than on experience, to a system where no distinctions exist save those which are derived from the nature of things and are founded on the real differences that distinguish the moral actions of mankind.
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.[32]
