A poem I found in my files - don't know the author, but it's worth keeping.
A smile is such a funny thing
It wrinkles up your face
And when it's gone you never find
It's secret hiding place.
But far more wonderful it is,
To see what smiles can do.
You smile at one, he smiles at you,
And so one smile makes two.
And since a smile can do so much
By cheering hearts of care,
Let's smile a lot this Christmas time -
Such smiles go everywhere.