Should we look for as many friends as possible, or a middle ground between too many and none? From the point of view of utility, the best is a middle ground, because to correspond to the services of many is laborious and perhaps impossible. Also to have a good time, a few are enough, like a little seasoning in the food. If we have more friends than we need, they will be annoying and embarrassing.
Therefore, the number of friends must be limited and relative: the greatest number that we can live with, since coexistence seems a necessary condition of friendship.
That is why close friendship does not occur with many, because it would be necessary to live with everyone, and that is why it is correct to say that he who has many friends has none.