Why the Rhetoric Begins with the Listener's Heart

The chapter's central question

In Rhetoric, emotions (pathē) are things that accompany pain or pleasure and cause differences in judgment. So the speaker must understand not only the argument itself, but also who is speaking, to whom, and under what circumstances. This is because an angry juror and a calm juror may feel the weight of the same testimony differently.

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Aristotle was the first philosopher in Western history to dissect emotions item by item. But surprisingly, the work in which he studied emotions most deeply was not a book on ethics, but Rhetoric. Rhetoric is ‘the art of persuading others,’ so why did a master of philosophy compile a theory of human emotions while lecturing on how to persuade people?

The reason is obvious. Because humans are not calculators that operate solely on cold logic! No matter how perfect syllogisms and data you present, if the listener is angry or fearful, the same facts will sound completely distorted. When you love, even the other person's fatal flaws seem attractive, but when you hate, even the sound of that person's breathing is disgusting.

Aristotle defined emotions as ‘a powerful lens of perception that fundamentally changes human judgment (Krisis).’ In order to persuade others and lead myself, I had to understand the operating mechanism of this emotional lens.

Context and nuance

Aristotle's theory of emotions is scattered in 『Rhetoric』, 『Nicomachean Ethics』, and 『Poetics』. Each of the three works looks at emotions from different perspectives: persuasion, character, and tragedy. What they have in common is that emotions are not just noise, but experiences with a reason and an object that cause us to see and judge the world in a certain way.

This insight is not the same as the skill of manipulating emotions. Aristotle's rhetoric is the art of public judgment in which logos, ethos, and pathos work together. Arguments that ignore emotions are incomplete, but incitement that only inflates fears without any basis is also not good rhetoric. The key is the condition where emotions and truthful judgment meet.

Do not oversimplify it this way

There is no need to say that Aristotle knew in advance all the answers to today's psychology. His physiology and social assumptions have limitations of the times. Nevertheless, the way in which emotions were analyzed as events intertwined with physical states, objects, beliefs, and behavioral impulses remains powerful. It is more accurate to find similarities between the insights of the original text and the explanations of modern science, but not to equate them with each other.

Philosophy in life

Have you ever been angry and unable to do anything for the whole day because of the other person's crooked tone of voice, even though it was nothing special?

Step 1: ‘Noticing your physical state’ — First check whether your body is tired, hungry, or stressed.

Primary-source guide

Primary guide: Rhetoric II.1–11, Nicomachean Ethics II, and Poetics 6 and 13–14.

Pathos Editorial · Reviewed 2026-09-12