求经典英语短诗!

Smiles Make The World Go Round !!!
　　
　　Smiling is infectious, you catch it like the flu
　　When someone smiled at me today
　　I started smiling too.
　　
　　I passed around the corner, and someone saw my grin
　　When he smiled I realised
　　I'd passed it on to him.
　　
　　I thought about that smile, then realised its worth
　　A single smile, just like mine
　　Could travel round the earth.
　　
　　So, if you feel a smile begin, don't leave it undetected.
　　Let's start an epidemic quick,
　　and get the world infected!