Aristotle's Rhetorical Devices

Aug 19, 2025

Overview

This lecture introduces Aristotle's three rhetorical devices—ethos, pathos, and logos—used to persuade audiences in argument writing.

Introduction to Rhetorical Devices

  • Aristotle identified three main techniques to persuade others: ethos, pathos, and logos.
  • These rhetorical devices help make arguments more convincing in essays and debates.

Ethos: Moral Character

  • Ethos is about establishing the speaker's credibility and moral character.
  • Persuasion is more effective when the audience perceives the speaker as trustworthy and fair-minded.
  • Tone and approach matter; a calm, respectful manner helps build ethos.

Pathos: Emotion

  • Pathos involves appealing to the audience's emotions to persuade.
  • Emotional examples or stories can make arguments more relatable and impactful.
  • Using pathos can shift the audience from thinking to feeling, increasing their investment in the topic.

Logos: Reason

  • Logos refers to using logic and reason to convince the audience.
  • It involves presenting clear reasons, facts, statistics, and evidence to support arguments.
  • Logical explanations make the argument difficult to refute.

Using the Three Together

  • Strong arguments typically use a combination of ethos, pathos, and logos.
  • Relying on all three makes for more compelling and well-rounded persuasion.

Key Terms & Definitions

  • Ethos — convincing an audience by demonstrating credibility or moral character.
  • Pathos — persuading by appealing to the audience's emotions.
  • Logos — persuading through logical reasoning and factual evidence.

Action Items / Next Steps

  • Practice identifying ethos, pathos, and logos in argument essays or speeches.
  • Write an argument paragraph and intentionally use all three devices.