Impulse is the best linguist

So Mr Thoreau thought

And often what is written here

Is spoiled by what is later brought

 

Yet

All I write and sometimes rhyme

Falls on the page untaught

So needs some tender love and care

Before you see it as you ought

 

So

The lines you read from any page

Should by your ear be caught

As best words ordered to flow well

With all my meaning simply wrought

 

But

Maybe my first scribed impulse

Said best what I purport

But is ruined by my later drafting:

I spoiled the pleasure that you sought