From the first and the second chapter of book one, Aristotle is talks of rhetoric as that aspect of finding in a situation all the possible means of persuasion. In the first chapter, Aristotle defines dialecture which he says is the counterpart of rhetoric since they are more or less the same. In talking about persuasion, Aristotle indicates that every individual has is or her way of persuasion. This depends on the character of the speaker, the ability to put the audience to a certain frame of mind and having proof. He thus says that to persuade, one has to understand emotions. Similarly, one has to reason logically and furthermore one has to understand human character.
In his explanation, Aristotle brings out the elements of ethos, pathos and logos. In pathos he talks about emotions. He says that you have to correctly understand your audience by knowing their emotions and the way they react to issues. What follows is that you have to look into ways of persuading them. This is through subjects and topics that appeal to their emotions and try to arrest their conscience for them to be convinced. On ethos, he emphasizes credibility in that one should represent himself or herself as somebody worth giving a hearing to. For this, your track record ought to be clear for people to ethically accept your propositions or rather your argument.
On logic, he says that whatever information or proposition you are raising; you should have reasons to support your propositions. In this case, Aristotle looks at deductive and inductive reasoning and says that to convince effectively, you ought to appeal to logic or rather convince by supporting your views with facts.