You can see it on their face, first you see a smile and then you see the worries of the world roll off their shoulders.

This study demonstrates that even a short-term exposure to dogs has beneficial physiological and psychosocial effects on patients who want it.

He walked around with pockets full of quarters, handing out handfuls to people just to put a smile on their faces.

Whatever it is you do; make sure you do it with grace, style and a smile...

You're the Nile,/ You're the Tower of Pisa,/ You're the smile/ On the Mona Lisa.

Just smile at what has gone by; it could have been worse.