by experience the tendencies of actions on which experience all the prudence as well as all the morality of life is dependent People talk as if the commencement of this course of experience had hitherto been put off and as if at the moment when some man feels tempted to meddle with the property or life of another he had to begin considering for the first time whether murder and theft are injurious to human happiness Even then I do not think that he would find the question very puzzling but at all events the matter is now done to his hand It is truly a whimsical supposition that if mankind were agreed in considering utility to be the test of morality they would remain without any agreement as to what is useful and would take no measures for having their notions on the subject taught to the young and enforced by law and opinion There is no difficulty in proving any ethical standard whatever to work ill if we suppose universal idiocy to be conjoined with it but on any hypothesis short of that mankind must by this time have acquired positive beliefs as to the effects of some actions on their happiness and the beliefs which have thus come down are the rules of morality for the multitude and for the philosopher until he has succeeded in finding better That philosophers might easily do this even now on many subjects that the received code of ethics is by no means of divine right and that mankind have still much to learn as to the effects of actions on the general happiness I admit or rather earnestly maintain The corollaries from the principle of utility like the precepts of every practical art admit of indefinite improvement and in a progressive state of the human mind their improvement is perpetually going on But to consider the rules of morality as improvable is one thing to pass over the intermediate generalizations entirely and endeavour to test each individual action directly by the first principle is another It is a strange notion that the acknowledgement of a first principle is inconsistent with the admission of secondary ones To inform a traveller respecting the place of his ultimate destination is not to forbid the use of landmarks and direction-posts on the way The proposition that happiness is the end and aim of morality does not mean that no road ought to be laid down to that goal or that persons going thither should not be advised to take one direction rather than another Men really ought to leave off talking a kind of nonsense on this subject which they would neither talk nor listen to on other matters of practical concernment Nobody argues that the art of navigation is not founded on astronomy because sailors cannot wait to calculate the Nautical Almanack Being rational creatures they go to sea with it ready calculated and all rational creatures go out upon the