昨天，今天， 明天

看過電影"功夫熊貓"後，“為什麽熊貓的爸爸是個鴨子？“讓孩子們非常困惑。但烏龜師傅的關於昨天，今天和明天的妙語讓我回味。從網上找到原詩如下：

The clock is running
Time waits for no man
Yesterday is history
Tomorrow (the Future) is a mystery 
But today is a gift 
That's why it is called the present!