Frost

Roberts Frost's Mending Wall explores the theme of "inner barriers" throughout a paused, yet critical tone. By employing diverse allegories and the extended metaphor  of the "wall", Frost conveys a dense underlined message beyond the narrators relationship with his neighbor.

The parallelism begins from the first line, when the speaker alludes to "something that is doesn't love a wall" (line 1), "is" becoming an allegory for a higher power which "sends", "spills" and "makes gaps" against this wall that immediately acquires a higher connotation in the poem as a metaphorical form of antagonism.

The reader can observe the narrators denotation of his personal position towards the wall, which is somewhat compressive when saying he has "come after them" and "made repair" (line 3), partially coinciding with the figure of the wall on its weakness.

The couplet on lines 10-11 express a descriptive meta-fiction when portraying the existence of the "gaps" in the wall. Naturally, the "gaps" stand up as a metaphor for the "tweaks" and imperfections of the wall, which represents the inevitability of linear existence.

At this point, the wall is characterized as an integrated symbol in the poem, becoming the protagonist in the narrators internal conflict.