It costs nothing, but creates a lot.
It enriches those who receive it without impoverishing those who give it.
You flash it for a moment, but the memory lasts sometimes for a lifetime.
No one is rich enough to do without it.
It creates happiness at home, a benevolent environment at work and is a password for friends.
She is a rest to the weary, a ray of hope to the disillusioned, a ray of sunshine to the sad and the best natural antidote to worries.
It cannot be begged, borrowed or stolen, for it is absolutely worthless if not given sincerely.
And no one needs a smile more than someone who can no longer give it.