THREE:If, moreover, the prevention of crime is the chief object of punishment, why wait till the crime is committed? Why not punish before, as a certain Turk in Barbary is said to have done, who, whenever he bought a fresh Christian slave, had him forthwith suspended by his heels and bastinadoed, that the severe sense of his punishment might prevent him from committing in future the faults that should[82] merit it?[43] Why should we ever let a man out of prison who has once entered one? Is he not then a hundred times more likely to violate the law than he was before; and is he ever more dangerous to society than when he has once suffered for the public example, and been released from the discipline that was intended to reform him? It is still true, as Goldsmith said long ago, that we send a man to prison for one crime and let him loose again ready to commit a thousand. And so it is, that of the 74,000 souls who make up our criminal classes, whilst about 34,000 of them fill our prisons and reformatories, there is still an army of 40,000 at large in our midst, whom we class as known thieves, receivers of stolen goods, and suspected persons.[44]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.
