JFK uses this numerous times to engage his audience. Some of his most quotable phrases, in fact, are of this rhetoric. He wanted the nation to “never negotiate out of fear. But...never fear to negotiate.” By speaking it this way though, his point was driven home in two impactful sentences. He does this again in what is undoubtedly the greatest quote from the speech, when he pleads for people to “ask not what your country can do for you ask what you can do for your country.” This idea is one of Kennedy's main points he planned to address in his presidency. The Vietnam War was going on, and people were fleeing to escape the draft. So, to urge the nation into helping fight, he uses antithesis and the contrast of selfishness and selflessness, which proves to be effective as his whole speech