Why Sharing?

There was one big apple, one boy and one girl, who actually are friends.

— Should the apple be given to your friend? - the boy has been asked.

— No. I want the apple.

— Should the apple be given to your friend? - the girl was asked, too.

— No... I want the apple for myself.

— Do you want to share?

They both nodded:

— Yes! Yes!

The apple was split into halves. Boy took both:

— This one is bigger. And it is red. I like red apples, — he gave the big red apple half to his friend.