feeble, if we find a material advantage in so doing, unless they are able to excite the sympathy of persons who can harm us. Moreover, some vices (as for example, many kinds of sensuality and extravagant luxury) do not inflict any immediate or obvious injury on any individual, though they tend in the long-run to impair the general happiness: hence few persons find themselves strongly moved to check or punish this kind of mischief. Doubtless in the last-mentioned cases the mere disrepute inevitably attaching to open immorality is an important consideration. But I do not think that this will be seriously maintained to be sufficient always to turn the scales of prudence against vice--at least by any one who has duly analysed the turbid and fluctuating streams of social opinion upon which the good or ill repute of individuals mainly depends, and considered the conflicting and divergent elements that they contain. Many moralists have noticed the discrepancy in modern Europe between the Law of Honour (or the more important rules maintained by the social sanction of polite persons) and the morality professed in society at large. This is, however, by no means the only instance of a special code, divergent in certain points from the moral rules generally accepted in the community where it exists. Most religious sects and parties, and probably the majority of trades and professions, exhibit this phenomenon in some degree. I do not mean merely that special rules of behaviour are imposed upon members of each profession, corresponding to their special social functions and relations: I mean that a peculiar moral opinion is apt to grow up, conflicting to a certain extent with the opinion of the general public. The most striking part of this divergence consists generally in the approval or excusal of practices disapproved by the current morality: as (_e.g._) licence among soldiers, bribery among politicians in certain ages and countries, unveracity of various degrees among priests and advocates, fraud in different forms among tradesmen. In such cases there are generally strong natural inducements to disobey the stricter rule (in fact it would seem to be to the continual pressure of these inducements that the relaxation of the rule has been due): while at the same time the social sanction is weakened to such an extent that it is sometimes hard to say whether it outweighs a similar force on the other side. For a man who, under these circumstances, conforms to the stricter rule, if he does not actually meet with contempt and aversion from those of his calling, is at least liable to be called eccentric and fantastic: and this is still more the case if by such conformity he foregoes advantages not only to himself but to his relatives or friends or party. Very often this professional or sectarian excusal of immorality of which we are speaking is not so clear and explicit as to amount to the establishment of a rule, conflicting with the generally