起風的日子

曾經是遠方的朋友寄來的一首詩。
在起風的日子，讀著這首詩。

Wind
Who has seen the wind?
Neither I nor you ;
But when the leaves hang trembling
The wind is passing through.

Who has seen the wind?
Neither I nor you ;
But when the trees bow down their heads
The wind is passing by.

-Christina Rossetti