The theme of the poem is about two neighbors who disagree over the need of a wall to separate their properties. Not only does the wall act as a divider in separating estates, it also acts as a barrier in the neighbors’ friendship, separating them. For the neighbor with the pine trees, the wall is of great significance, as it provides a sense of security and privacy. He believes that although two people can still be friendly neighbors, some form of barrier is needed to separate them and 'wall in' the personal space and privacy of the individual.
The poem itself is a technique Robert Frost uses to convey his ideas. Behind the literal representation of building walls, there is a deeper metaphoric meaning, which reflects people's attitudes towards others. It reflects the social barriers people build, to provide a sense of personal security and comfort, in the belief that barriers are a source of protection which will make people less vulnerable to their fears. He has an open disposition and does not understand the need to 'wall in' or 'wall out' anything or anyone.
In the poem, the poet describes the degradation of the wall, creating a visual image for the reader. The sentence structure of the first line of the poem places emphasis on 'something'. This, compound with the use of personification, makes 'something' appear alive and even human-like. Nature, in the form of cold weather, frost and