Oh, just another kind of out-door game, One on a side. It comes to little more: (lines 21-22)
The speaker reduces the job of mending the wall to an "out-door game," but we think it’s very easy for him to interpret his task in a far more serious way. At this point, we realize how much power our speaker wields in telling the story that he narrates, and in describing the scene that takes place. Do you trust this speaker?
He moves in darkness as it seems to me~ Not of woods only and the shade of trees. (lines 42-43)
Again, he reminds us that the speaker relates this chain of events and this process of mending a wall as he sees it. It could be that the neighbor simply moves in the shade of the trees, but our speaker casts the entire scene in a darker, more ominous light. What kind of darkness do you think this is, and why do you think our speaker makes such a point to distinguish this darkness from the shade around him?