He gives his harness bells a shake

To ask if there is some mistake,

The only other sounds 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.

[255].

There may be a few small verbal puzzles in this fifteenth-century carol—otherwise as clear, sharp and shining as a winter moon.