Kitap 7
4
Perhaps, therefore, there are some services that ought to be rendered to the useful friend and others to the good friend: for instance, if a friend gives you food and necessaries you are not therefore bound to give him your society, and accordingly also you are not bound to render to the friend to whom you give your society the things that you do not get from him but from the useful friend; but those who by so doing wrongly give everything to one whom they love are good-for-nothing people.
4
And the defining marks of friendship stated in the discourses all belong to friendship in some sense, but not to the same kind of friendship.
5
It is a mark of the useful friend that one wishes the things good for him, and so of the benefactor, and in fact a friend of any sort (for this definition of friendship is not distinctive); of another friend, that one wishes his existence, of another that one wishes his society; of the friend on the ground of pleasure, that one shares his grief and his joy.
