Why are Poetic Language and Tone included on the Abstract Level?

How to combine the two sentences in bold.

5read the following sentence from kennedy's inaugural speech.and so, my fellow americans, ask not what your countfor you; ask what you can do for your country.ot what your country can dothis sentence is an example of an antimetabole, a rhetorical device in whichthe speaker reverses the order of repeated words. antimetabole is used toplace added emphasis on the final part of the statement. which of thefollowing is also an example of antimetabole? a"this nation, for all its hopes and boasts, will not be fully free until itscitizens are free." – john f. kennedy, 1963"forgive your enemies, but never forget their names."- john f. kennedy, quoted in 1984 by ed kochc"mankind must put an end to war, or war will put an end to mankind."- john f. kennedy, 1961d"a man may die, nations may rise and fall, but an idea lives on."- john f. kennedy, 1962

What is the central idea in this advice from branch rickey to jackie robinson?