intensified by its proper pleasure, since each class of things is
better judged of and brought to precision by those who engage in the
activity with pleasure; e.g. it is those who enjoy geometrical
thinking that become geometers and grasp the various propositions
better, and, similarly, those who are fond of music or of building,
and so on, make progress in their proper function by enjoying it; so
the pleasures intensify the activities, and what intensifies a thing
is proper to it, but things different in kind have properties
different in kind.

  This will be even more apparent from the fact that activities are
hindered by pleasures arising from other sources. For people who are
fond of playing the flute are incapable of attending to arguments if
they overhear some one playing the flute, since they enjoy
flute-playing more than the activity in hand; so the pleasure
connected with fluteplaying destroys the activity concerned with
argument. This happens, similarly, in all other cases, when one is
active about two things at once; the more pleasant activity drives out
the other, and if it is much more pleasant does so all the more, so
that one even ceases from the other. This is why when we enjoy
anything very much we do not throw ourselves into anything else, and
do one thing only when we are not much pleased by another; e.g. in the
theatre the people who eat sweets do so most when the actors are poor.
Now since activities are made precise and more enduring and better
by their proper pleasure, and injured by alien pleasures, evidently
the two kinds of pleasure are far apart. For alien pleasures do pretty
much what proper pains do, since activities are destroyed by their
proper pains; e.g. if a man finds writing or doing sums unpleasant and
painful, he does not write, or does not do sums, because the
activity is painful. So an activity suffers contrary effects from
its proper pleasures and pains, i.e. from those that supervene on it
in virtue of its own nature. And alien pleasures have been stated to
do much the same as pain; they destroy the activity, only not to the
same degree.

  Now since activities differ in respect of goodness and badness,
and some are worthy to be chosen, others to be avoided, and others
neutral, so, too, are the pleasures; for to each activity there is a
proper pleasure. The pleasure proper to a worthy activity is good
and that proper to an unworthy activity bad; just as the appetites for
noble objects are laudable, those for base objects culpable. But the
pleasures involved in activities are more proper to them than the
desires; for the latter are separated both in time and in nature,
while the former are close to the activities, and so hard to
distinguish from them that it admits of dispute whether the activity
is not the same as the pleasure. (Still, pleasure does not seem to
be thought or perception-that would be strange; but because they are
not found apart they appear to some people the same.) As activities
are different, then, so are the corresponding pleasures. Now sight
is superior to touch in purity, and hearing and smell to taste; the
pleasures, therefore, are similarly superior, and those of thought
superior to these, and within each of the two kinds some are
superior to others.

  Each animal is thought to have a proper pleasure, as it has a proper
function; viz. that which corresponds to its activity. If we survey
them species by species, too, this will be evident; horse, dog, and
man have different pleasures, as Heraclitus says 'asses would prefer
sweepings to gold'; for food is pleasanter than gold to asses. So
the pleasures of creatures different in kind differ in kind, and it is
plausible to suppose that those of a single species do not differ. But
they vary to no small extent, in the case of men at least; the same
things delight some people and pain others, and are painful and odious
to some, and pleasant to and liked by others. This happens, too, in
the case of sweet things; the same things do not seem sweet to a man
in a fever and a healthy man-nor hot to a weak man and one in good
condition. The same happens in other cases. But in all such matters
that which appears to the good man is thought to be really so. If this
is correct, as it seems to be, and virtue and the good man as such are
the measure of each thing, those also will be pleasures which appear
so to him, and those things pleasant which he enjoys. If the things he
finds tiresome seem pleasant to some one, that is nothing
surprising; for men may be ruined and spoilt in many ways; but the
things are not pleasant, but only pleasant to these people and to
people in this condition. Those which are admittedly disgraceful
plainly should not be said to be pleasures, except to a perverted
taste; but of those that are thought to be good what kind of
pleasure or what pleasure should be said to be that proper to man?
Is it not plain from the corresponding activities? The pleasures
follow these. Whether, then, the perfect and supremely happy man has
one or more activities, the pleasures that perfect these will be
said in the strict sense to be pleasures proper to man, and the rest
will be so in a secondary and fractional way, as are the activities.

                                 6

  Now that we have spoken of the virtues, the forms of friendship, and
the varieties of pleasure, what remains is to discuss in outline the
nature of happiness, since this is what we state the end of human
nature to be. Our discussion will be the more concise if we first
sum up what we have said already. We said, then, that it is not a
disposition; for if it were it might belong to some one who was asleep
throughout his life, living the life of a plant, or, again, to some
one who was suffering the greatest misfortunes. If these
implications are unacceptable, and we must rather class happiness as
an activity, as we have said before, and if some activities are
necessary, and desirable for the sake of something else, while
others are so in themselves, evidently happiness must be placed
among those desirable in themselves, not among those desirable for the
sake of something else; for happiness does not lack anything, but is