I heard a brooklet gushing  
From its rocky fountain near,  
Down into the valley rushing,  
So fresh and wondrous clear.  
 
I know not what came o'er me,  
Nor who the counsel gave;  
But I must hasten downward,  
All with my pilgrim-stave;  
 
Downward, and ever farther,  
And ever the brook beside;  
And ever fresher murmured,  
And ever clearer, the tide.  
 
Is this the way I was going?  
Whither, O brooklet, say I  
Thou hast, with thy soft murmur,  
Murmured my senses away.  
 
What do I say of a murmur?  
That can no murmur be;  
'Tis the water-nymphs, that are singing  
Their roundelays under me.  
 
Let them sing, my friend, let them murmur,  
And wander merrily near;  
The wheels of a mill are going  
In every brooklet clear.
Henry Wadsworth Longfellow
http://www.poemhunter.com/poem/whither-from-the-german-of-m-ller/