Which rhetorical device is most prominent in this excerpt from john f. kennedy’s inaugural address?

so let us begin anew—remembering on both sides that civility is not a sign of weakness, and sincerity is always subject to proof. let us never negotiate out of fear. but let us never fear to negotiate.

let both sides explore what problems unite us instead of belaboring those problems which divide us.

let both sides, for the first time, formulate serious and precise proposals for the inspection and control of arms—and bring the absolute power to destroy other nations under the absolute control of all nations.

let both sides seek to invoke the wonders of science instead of its terrors. together let us explore the stars, conquer the deserts, eradicate disease, tap the ocean depths, and encourage the arts and commerce.

let both sides unite to heed in all corners of the earth the command of isaiah—to "undo the heavy burdens . . and to let the oppressed go free.”

metaphor
repetition
hyperbole
hypophora

B. Repetition

The rhetorical device most prominent as we can see with in the first words of sentences is the repetitive use of “let both sides.”  The specific type of repetition here is known as anaphora, which is the repetition of a word (or in this case words) at the beginning of line/verse/sentence.  That said, repetition is quite the effective literary device when the desired effect is to emphasize in order to highlight importance.

based on the biblical principle philippians 4: 13 "i can do everything through christ who strengthens me." i agree that it is through him that we are given the strength to cope with every situation.

and based on the biblical principle proverbs 16: 32 "better to get angry slowly than to be a hero. better to be even-tempered than to capture a city."   i agree with the author of the passage to the extent that the nobility of heart demonstrates the strength of a person. those who are contemptuous, get angry easily and show their anger toward others are really weak, but those who are noble and make sure to not hurt other people and their feelings are strong people.

both the address and the poster use diction to convey their message. diction is defined as a style of writing or speaking based on the types of words chosen in order to send a message. parallelism is when a similar sentence structure is used for several sentences on a text; roosevelt's address doesn't follow that. repetition has to do with repeating a word or sentence in order to emphasize and idea, however neither the poster nor the address use repetion. finally, the address doesn't use images to convey a message.