The same conclusion follows perhaps still more clearly from the fact that the exercise of one faculty is impeded by the pleasure proper to another; e.g. a lover of the flute is unable to attend to an argument if he hears a man playing, since he takes more delight in flute-playing than in his present business; the pleasure of the flute-player, therefore, hinders the exercise of the reason.
The same result follows in other cases, too, whenever a man is exercising his faculties on two things at a time; the pleasanter business thwarts the other, and, if the difference in pleasantness be great, thwarts it more and more, even to the extent of suppressing it altogether. Thus, when anything gives us intense delight, we cannot do anything else at all, and when we do a second thing, we do not very much care about the first; and so people who eat sweetmeats in the theatre do this most of all when the actors are bad.