Caring for but never trying to own may be a further way to define friendship.
FRIENDSHIP, FURTHER WAY TO DEFINE FRIENDS
Never explain - your friends do not need it and your enemies will not believe you anyway.
An insincere and evil friend is more to be feared than a wild beast a wild beast may wound your body, but an evil friend will wound your mind.
FRIENDSHIP, AN EVIL FRIEND WILL WOUND YOUR MIND
When the world is so complicated, the simple gift of friendship is within all of our hands.
True friendship ought never to conceal what it thinks.
friendship, thinks, ought never, conceal
Silences make the real conversations between friends. Not the saying but the never needing to say is what counts.