Says Mill (Op. cit., pp. 332-4): "During the whole past duration of the species, mankind have been learning by experience the tendencies of actions, on which experience all the prudence as well as all the morality of life are dependent.... Mankind must by this time have acquired positive belief 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.... Nobody argues that the art of navigation is not founded on astronomy, because sailors cannot wait to calculate the 'Nautical Almanac'. Being rational creatures, they go to sea with it ready calculated; and all rational creatures go out upon the sea of life with their minds made up on the common questions of right and wrong, as well as on many of the far more difficult questions of wise and foolish." That we do learn from experience the moral nature of actions is undoubted. The only question is: _if_ hedonism were true, _could_ we so learn? Suppose that I were convinced that the results of murder in the past had been generally, or even without exception (though this could not be proved), painful; as long as the act and the result in the way of feeling (pain or pleasure) are conceived as having no intrinsic connection, this would not prove that in the present instance murder will give a surplus of pain. I am not thinking of committing murder in general, but of murder under certain specific present circumstances. These circumstances may, and, to some extent, _must_ vary from all previous instances of murder. How then can I reason from them to it? Or, rather, let me use the previous cases as much as I may, the moral quality of the act I am now to perform must still be judged not from them, but from the circumstances of the present case. To judge otherwise, is, on hedonistic principles, to be careless, perhaps criminally careless as to one's conduct. The more convinced a man is of the truth of hedonism and the more conscientious he is, the more he is bound _not_ to be guided by previous circumstances, but to form his judgment anew concerning the new case. This result flows out of the very nature of the hedonistic ideal. Pleasure is not an activity, but simply a particular feeling, enduring only while it is felt. Moreover, there is in it no principle which connects it intrinsically with any _kind_ of action. To suppose then that, because ninety-nine cases of murder have resulted in pain, the hundredth will, is on a par with reasoning that because ninety-nine days have been frosty, the hundredth will be. Each case, taken as particular, must be decided wholly by itself. There is no continuous moral life, and no system of conduct. There is only a succession of unlike acts.