Caring for but never trying to own may be a further way to define friendship.
FRIENDSHIP, FURTHER WAY TO DEFINE FRIENDS
True friendship is like sound health the value of it is seldom known until it is lost.
FRIENDSHIP, TRUE FRIENDSHIP IS LIKE SOUND HEALTH
Never explain - your friends do not need it and your enemies will not believe you anyway.
Friendship is the shadow of the evening, which increases with the setting sun of life.