The author does not omit to notice the usual charge that it is impossible to make a calculation of consequences previous to every action, which is as much as to say that no one can be under the guidance of Christianity, because there is not time, on the occasion of doing anything, to read through the Old and New Testaments. The real answer is (substantially the same as Austin's) that there has been ample time during the past duration of the species. Mankind have all that time been learning by experience the consequences of actions; on that experience they have founded both their prudence and their morality. It is an inference from the principle of utility, which regards morals as a practical art, that moral rules are improvable; but there exists under the ultimate principle a number of intermediate generalizations, applicable at once to the emergencies of human conduct. Nobody argues that navigation is not founded on astronomy, because sailors cannot wait to calculate the Nautical Almanack. As to the stock argument, that people will pervert utility for their private ends, Mr. Mill challenges the production of any ethical creed where this may not happen. The fault is due, not to the origin of the rules, but to the complicated nature of human affairs, and the necessity of allowing a certain latitude, under the moral responsibility of the agent, for accommodation to circumstances. And in cases of conflict, utility is a better guide than anything found in systems whose moral laws claim independent authority. Chapter III. considers the ULTIMATE SANCTION OF THE PRINCIPLE OF UTILITY. It is a proper question with regard to a supposed moral standard,--What is its sanction? what is the source of its obligation? wherein lies its binding force? The customary morality is consecrated by education and opinion, and seems to be obligatory _in itself_; but to present, as the source of obligation, some general principle, not surrounded by the halo of consecration, seems a paradox; the superstructure seems to stand better without such a foundation. This difficulty belongs to every attempt to reduce morality to first principles, unless it should happen that the principle chosen has as much sacredness as any of its applications. Utility has, or might have, all the sanctions attaching to any other system of morals. Those sanctions are either External or Internal. The External are the hope of favour and the fear of displeasure (1) from our fellow-creatures, or (2) from the Ruler of the Universe, along with any sympathy or affection for them, or love and awe of Him, inclining us apart from selfish motives. There is no reason why these motives should not attach themselves to utilitarian morality.