It is but natural that such friendships should be uncommon, as such people are rare. Such a friendship, moreover, requires long and familiar intercourse. For, as the proverb says, it is impossible for people to know one another till they have consumed the requisite quantity of salt together. Nor can they accept one another as friends, or be friends, till each show and approve himself to the other as worthy to be loved. Those who quickly come to treat one another like friends may wish to be friends, but are not really friends, unless they not only are lovable, but know each other to be so; a wish to be friends may be of rapid growth, but not friendship.

This kind of friendship, then, is complete in respect of duration and in all other points, and that which each gets from the other is in all respects identical or similar, as should be the case with friends.