Quindlen asserts that despite the diversity present, all American citizens form a united and strong nation. While this unity is indeed a beneficial aspect for the country, Quindlen points out that diversity can also lead to conflicts and inequalities among citizens, which not only has negative implications but also undermines the very ideals of freedom and equality that this nation was founded upon. Despite the apparent contrasts and contradictions these statements present, they ultimately reinforce Quindlen's position, as individuals tend to set aside their differences and come together in times of need to uphold the value of diversity across the nation.
The author may have opted for couplets as it is a specific method of writing poetry.
Metaphor
As revealed in the narrative, the misfit was not actually buried alive. This phrase occupies a section of the story where he recounts his ordeal and attempts to illustrate the extreme discomfort he faced in the penitentiary. He employs a metaphor, likening his experience there to being buried alive. A key insight to maintain during your readings and analysis of literary works is that whenever there are comparisons that are not literally true, it is likely you are encountering figurative language—specifically a metaphor.