* Emphasizing Shared Humanity: The poem argues against prejudice and war by highlighting the fundamental unity of all humans. By calling us "a single body," Auden emphasizes that we all share the same physical and emotional experiences, regardless of our differences. It's a call to recognize the common ground we share as a species.
* Breaking Down Barriers: The phrase directly counters the "us vs. them" mentality that fuels conflict. By focusing on our collective "body," Auden suggests that we are inherently connected, and the artificial divisions we create through nationality, race, or culture are ultimately insignificant.
* A Challenge to Nationalism: The poem was written during World War II, a time of intense nationalism. Auden explicitly challenges the idea that national borders define our identities. The "single body" metaphor suggests that our shared humanity transcends these political boundaries.
* A Call for Empathy: The image of a single body invites us to imagine ourselves in the shoes of others. By recognizing our shared physicality and experiences, we can foster greater empathy and understanding across borders.
* The Potential for Change: The poem suggests that recognizing our common humanity is a necessary step towards a more peaceful world. If we see ourselves as part of a "single body," we are more likely to act with compassion and work together for the benefit of all.
In summary: "Single body" is a powerful metaphor that serves as the central theme of Auden's poem. It emphasizes our shared humanity, challenges divisive ideologies, and ultimately calls for a more unified and peaceful world.