And miles to go before I sleep

I have forgotten. And then Robert Frost's poem, "Stopping by Woods on a Snowy Evening" reminded me. And it was very clear. 

"Whose woods there are, I think I know

His house is in the village though;   

He will not see me stopping here   

To watch his woods fill up with snow.   

 

My little horse must think it queer   

To stop without a farmhouse near   

Between the woods and frozen lake   

The darkest evening of the year.   

 

He gives his harness bells a shake   

To ask if there is some mistake.   

The only other sound’s the sweep   

Of easy wind and downy flake.   

 

The woods are lovely, dark and deep,   

But I have promises to keep,   

And miles to go before I sleep,   

And miles to go before I sleep".