Such friendship is of an absolute nature; the others are accidental (IV.).

Friendship is in full exercise only during actual intercourse; it may exist potentially at a distance; but in long absence, there is danger of its being dissolved.
Friendship is a settled state or habit, while fondness is a mere passion, which does not imply our wishing to do good to the object of it, as friendship does (V.).

The perfect kind of friendship, from its intensity, cannot be exercised towards more than a small number.

In regard to the useful and the pleasant, on the other hand, there may be friendship with many; as the friendship towards tradesmen and between the young.

The happy desire pleasant friends.