It nods and curtseys and recovers  
When the wind blows above,  
The nettle on the graves of lovers  
That hanged themselves for love.  
 
The nettle nods, the wind blows over,  
The man, he does not move,  
The lover of the grave, the lover  
That hanged himself for love.
Alfred Edward Housman
http://www.poemhunter.com/poem/it-nods-and-curtseys-and-recovers/