Aristotle writes that persuasion is based on three things: the ethos, or personal character of the speaker; the pathos, or getting the audience into the right kind of emotional receptivity; and the logos, or the argument itself, carried out by abbreviated syllogisms, or something like deductive syllogisms, and by the use of example.
Randal Marlin (2013). “Propaganda and the Ethics of Persuasion - Second Edition”, p.39, Broadview Press