In his famous poem “Mending Wall” Robert Frost’s narrator builds,
alongside his neighbour, a stone wall that divides their respective
lands (Frost 1947: 47-8). The narrator can see this joint activity as no
more than a “kind of out-door game” for, “There where it is we do
not need the wall” and he wonders, “What I was walling in or walling
out, / And to whom I was like to give offence”. His taciturn neighbour
can only repeat his own father’s thought that “Good fences
make good neighbours”.