Lesson 03 · 7 min
Ethos, pathos, logos
Three materials of judgment, including the premise a speaker leaves unsaid.
Proofs the audience can use
Aristotle sorts the artistic proofs, the ones a speaker is responsible for inventing, into three. They are not personality types. They are materials of judgment, and a real case usually stacks them.
Logos
The structure of the case. Claims, reasons, evidence, and the warrant that connects a reason to a claim.
Ethos
The character the speech itself builds: practical wisdom, virtue, and goodwill toward this audience.
Pathos
The emotion under which the audience will judge. A frightened room and a confident room do not weigh the same risk in the same way.
The enthymeme
Public logos rarely looks like a classroom syllogism. It often looks like an enthymeme: a rhetorical syllogism that offers premises as grounds for a conclusion, and often leaves one premise unstated because the speaker expects the audience to supply it.
Ask three separate questions. Is the premise stated? Does this audience accept it? Does it actually support the conclusion? A disputed premise may need evidence or revision. Refusal does not, by itself, make the form incomplete or the inference valid.
"We should slip the launch. The last two releases shipped with open bugs." Earlier failures do not establish the state of this release. The missing link is that this release is like those, and that extra days would reduce the same risk. Ask what would connect them: open bugs now, similar testing, and a reason the extra time would help.
We should slip the launch.
The last two releases shipped with open bugs.
Unstated link: this release is like those, and extra days would reduce the same risk.
Ethos is shown here
A title or a credential can earn a first hearing. It does not finish ethos. This lesson is about the character the speech itself demonstrates: practical wisdom, virtue, and goodwill. The audience watches you make a careful distinction, tell a truth against your interest, or take their constraint seriously.
Goodwill is the part modern speakers skip. You can be right and still sound as if the audience's cost is not your concern. Listeners will call that a logos problem. It is often an ethos problem.
Pathos needs a job
If the feeling does all the work and the claim never arrives, you do not have pathos as a proof. You have a mood. Name the emotion you are asking for, then give it a task: confidence to try a pilot, anger sized to the offense, concern that does not erase the fact.
Aristotle, Rhetoric I.2 and II.1, on the appeals and on emotion as part of judgment rather than as ornament. Rhetoric II.1
Try it
Mark the sentence
Practice, not a completion check. Each line is doing one job. Tap the appeal that is carrying it.
I will take the correction in the all-hands myself.
The team is tired of shipping apologies.
A four-day slip costs one email. A rollback costs the quarter.
Checks
Completion check. Choose the distinction the lesson is drawing. A wrong guess stays visible long enough to read, then you can try again. The lesson is recorded when each check is in place. The Try it above, when there is one, is practice and does not record the lesson.