Lastly Mill introduces the Christian ideal. "As between his own happiness and that of others, utilitarianism requires him to be as strictly impartial as a disinterested and benevolent spectator. In the golden rule of Jesus of Nazareth, we read the complete spirit of the ethics of utility. To do as one would be done by, and to love one's neighbour as one's self, constitute the ideal perfection of utilitarian morality." In his attempt to prove the Christian obligation on an Epicurean basis the inconsistency between his Epicurean principle and his Christian preaching and practice becomes evident. Master of logic as Mill was, an author of a standard text-book on the subject, yet so desperate was the plight in which his attempt to stretch Epicureanism to Christian dimensions placed him, that he was compelled to resort to the following fallacy of composition, the fallaciousness of which every student of logic recognises at a glance. "Happiness is a good; each person's happiness is a good to that person, and the general happiness, therefore, a good to the aggregate of all persons." As Carlyle has pointed out, this is equivalent to saying, since each pig wants all the swill in the trough for itself, a litter of pigs in the aggregate will desire each member of the litter to have its share of the whole,--a fallacy which a single experience in feeding pigs will sufficiently refute. It requires something deeper and higher than Epicurean principles to lift men to a plane where Christian altruism is the natural and inevitable conduct which Mill rightly says it ought to be.
These confessions of an Epicurean heretic, wrung from a man who had been rigidly trained by a stern father in Epicurean principles, yet whose surpassing candour compelled him to make these admissions, so fatal to the system, so ennobling to the man and to the doctrine he proclaimed, serve as an admirable preparation for the succeeding chapters, where these same principles, which Mill introduces as supplements, and modifications, and amendments to Epicureanism, will be presented as the foundation-stones of larger and deeper views of life. Mill starts with a jack-knife which he publicly proclaims to be in every part of the handle and in every blade through and through Epicurean; then gets a new handle from the Stoics; borrows one blade from Plato, and another from Aristotle; unconsciously steals the biggest blade of all from Christianity; makes one of the best knives to be found on the moral market: yet still, in loyalty to early parental training, insists on calling the finished product by the same name as that with which he started out. The result is a splendid knife to cut with; but a difficult one to classify. Our quest for the principles of personality will not bring us anything much better, for practical purposes, than the lofty teaching of Mill's "Utilitarianism," and its companion in inconsistency, Herbert Spencer's "Principles of Ethics." All our five principles are present in these so-called hedonistic treatises. But it is a great theoretical advantage, and ultimately carries with it considerable practical gain, to give credit where credit is due, and to call things by their right names. Thanks to the candour of these heretics, though the names we encounter hereafter will be new, we shall greet most of the principles we discover under these new names as old friends to whom the Epicurean heretics gave us our first introduction.