We have to use a spell to make them balance:
'Stay where you are until our backs are turned!'
We wear our fingers rough with handling them.
Oh, just another kind of out-door game,
One on a side. It comes to little more:
There where it is we do not need the wall:
He is all pine and I am apple orchard.
My apple trees will never get across
And eat the cones under his pines, I tell him.
I've included line 26 because it finishes the thought. I have always seen these lines as containing the best argument for the speaker's side. There is a genuine and sweetly humorous interaction between the two men. Here they are, doing what they do every year, and they are, rough as the work is, having a little bit of boyish fun together. It's this feeling of brief camaraderie that prompts the speaker to suggest this about walls, mischievously:
'Why do they make good neighbors? Isn't it
Where there are cows?
But here there are no cows.
Before I built a wall I'd ask to know
What I was walling in or walling out,
And to whom I was like to give offence.
Something there is that doesn't love a wall,
That wants it down.'
Unfortunately, the neighbor is not convinced by the arument nor the little fun they've shared and would prefer to keep things just as they've always been.