Throughout the speech, Kennedy is convincing people to unite and stand up for action. One of the president's literary devices was to use extreme adjectives to emphasize his points. For example, Kennedy states, “In the long history of the world, only a few generations have been given the role of defending liberty in its hour of greatest danger.” In this way, he emphasizes his points and pushes people to agree with him, building a consensus rather than openly expressing his desire for people to follow his course of action. Additionally, the use of exhortative phrases offers a more inviting tone to the audience. For example, in paragraphs 27 and 14 he says “let us” instead of “we will do.” This helps people feel like they are helping to change problems, ultimately connecting to the purpose of the essay while guiding the audience to feel more united with their interests.