Which rhetorical device is most prominent in this excerpt from John F. Kennedy and inaugural address So let us begin anew and mdashremembering on both sides that civility is not a sign of weakness?

The most prominent rhetorical device in this excerpt is antithesis. Kennedy contrasts "begin anew" with the idea of remembering, emphasizing the duality of starting fresh while acknowledging the past. Additionally, the phrase "civility is not a sign of weakness" juxtaposes civility and strength, reinforcing the importance of respectful discourse in politics. This technique effectively highlights the call for unity and cooperation.