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Aristotle – Nicomachean Ethics
Book VIII
From: http://classics.mit.edu/Aristotle/nicomachaen.html
3
Now these reasons differ from each other in kind; so, therefore, do
the corresponding forms of love and friendship. There are therefore
three kinds of friendship, equal in number to the things that are
lovable; for with respect to each there is a mutual and recognized
love, and those who love each other wish well to each other in that
respect in which they love one another. Now those who love each other
for their utility do not love each other for themselves but in virtue
of some good which they get from each other. So too with those who
love for the sake of pleasure; it is not for their character that
men love ready-witted people, but because they find them pleasant.
Therefore those who love for the sake of utility love for the sake
of what is good for themselves, and those who love for the sake of
pleasure do so for the sake of what is pleasant to themselves, and
not in so far as the other is the person loved but in so far as he
is useful or pleasant. And thus these friendships are only incidental;
for it is not as being the man he is that the loved person is loved,
but as providing some good or pleasure. Such friendships, then, are
easily dissolved, if the parties do not remain like themselves; for
if the one party is no longer pleasant or useful the other ceases
to love him.
Now the useful is not permanent but is always changing. Thus when
the motive of the friendship is done away, the friendship is dissolved,
inasmuch as it existed only for the ends in question. This kind of
friendship seems to exist chiefly between old people (for at that
age people pursue not the pleasant but the useful) and, of those who
are in their prime or young, between those who pursue utility. And
such people do not live much with each other either; for sometimes
they do not even find each other pleasant; therefore they do not need
such companionship unless they are useful to each other; for they
are pleasant to each other only in so far as they rouse in each other
hopes of something good to come. Among such friendships people also
class the friendship of a host and guest. On the other hand the friendship
of young people seems to aim at pleasure; for they live under the
guidance of emotion, and pursue above all what is pleasant to themselves
and what is immediately before them; but with increasing age their
pleasures become different. This is why they quickly become friends
and quickly cease to be so; their friendship changes with the object
that is found pleasant, and such pleasure alters quickly. Young people
are amorous too; for the greater part of the friendship of love depends
on emotion and aims at pleasure; this is why they fall in love and
quickly fall out of love, changing often within a single day. But
these people do wish to spend their days and lives together; for it
is thus that they attain the purpose of their friendship.
Perfect friendship is the friendship of men who are good, and alike
in virtue; for these wish well alike to each other qua good, and they
are good themselves. Now those who wish well to their friends for
their sake are most truly friends; for they do this by reason of own
nature and not incidentally; therefore their friendship lasts as long
as they are good-and goodness is an enduring thing. And each is good
without qualification and to his friend, for the good are both good
without qualification and useful to each other. So too they are pleasant;
for the good are pleasant both without qualification and to each other,
since to each his own activities and others like them are pleasurable,
and the actions of the good are the same or like. And such a friendship
is as might be expected permanent, since there meet in it all the
qualities that friends should have. For all friendship is for the
sake of good or of pleasure-good or pleasure either in the abstract
or such as will be enjoyed by him who has the friendly feeling-and
is based on a certain resemblance; and to a friendship of good men
all the qualities we have named belong in virtue of the nature of
the friends themselves; for in the case of this kind of friendship
the other qualities also are alike in both friends, and that which
is good without qualification is also without qualification pleasant,
and these are the most lovable qualities. Love and friendship therefore
are found most and in their best form between such men.
But it is natural that such friendships should be infrequent; for
such men are rare. Further, such friendship requires time and familiarity;
as the proverb says, men cannot know each other till they have 'eaten
salt together'; nor can they admit each other to friendship or be
friends till each has been found lovable and been trusted by each.
Those who quickly show the marks of friendship to each other wish
to be friends, but are not friends unless they both are lovable and
know the fact; for a wish for friendship may arise quickly, but friendship
does not.