Ethos
Pathos is a rhetorical strategy in which the speaker attempts to appeal to the emotions.
Kennedy is using the rhetorical strategy of pathos in this excerpt from his address at Rice University. He appeals to the audience's emotions by evoking a sense of wonder and exploration as well as the potential for unity in achieving a shared goal.
Pathos is a rhetorical strategy in which the speaker attempts to appeal to the emotions.
Pathos
Parallelism
Rhetorical technique is when a person uses unique styles or ways to spread his views, such as as in political venues. Rhetorical strategy, however, is when one uses a certain word or action to provoke or trigger emotions in an attempt to gain his audience's confidence. In this kind of strategy, the speaker may sometimes use hyperbole symbols based on rhetoric.
anaphora
Kennedy is using the rhetorical strategy of parallelism in the excerpt provided. This is evident in the repetition of the phrase "not because... but because." The parallel structure emphasizes the contrasting ideas being presented and helps to strengthen the argument.
A common strategy in public speaking is to use rhetorical language to persuade or influence the audience. This can involve using emotionally charged language, powerful imagery, repetition, or rhetorical devices such as metaphors or analogies. By using rhetorical language effectively, speakers can enhance their message and connect with their audience on a deeper level.
Repetition is a rhetorical strategy that involves repeating a word, phrase, or sentence for emphasis. By using repetition, speakers or writers can reinforce their point, create a sense of rhythm or structure, and help make their message more memorable to the audience.
You'll find it among the rhetorical figures listed and explained at this site: http://www.uky.edu/AS/Classics/rhetoric.html