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The friendship based upon the pleasurable is, so to say, a copy

of this, since the good are sources of pleasure to one another:

and that based on utility likewise, the good being also useful to

one another.

Between men thus connected Friendships are most permanent when

the same result accrues to both from one another, pleasure, for

instance; and not merely so but from the same source, as in the

case of two men of easy pleasantry; and not as it is in that of a

lover and the object of his affection, these not deriving their

pleasure from the same causes, but the former from seeing the

latter and the latter from receiving the attentions of the

former: and when the bloom of youth fades the Friendship

sometimes ceases also, because then the lover derives no pleasure

from seeing and the object of his affection ceases to receive the

attentions which were paid before: in many cases, however, people

so connected continue friends, if being of similar tempers they

have come from custom to like one another's disposition.