Good persuasive speeches utilize rhetorical devices to unconsciously persuade the audience. Some of these devices include using quotations and allusions, imperatives that command the audience to act, inversions of typical sentence structure, archaic language, grammatical repetition of words or phrases, rhetorical questions, hyperbole to emphasize a point, and familiar cliches. These rhetorical devices serve to influence the audience at a subconscious level when used effectively in persuasive speeches.