Podcast brief
Plato's Hippias Minor: Knowledge, Virtue, and Lying
The hosts discuss Plato's Hippias Minor alongside the Ion to ask whether knowing what is right is the same as being disposed to do it.
A Stoa brief of an episode from The Partially Examined Life
Ep. 402: Plato Talks Homer: Hippias Minor and Ion (Part One)
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The episode belongs to its makers. This page summarizes its arguments in Stoa's words and points to the moments where they are made. Brief updated .
The brief
Plato's Hippias Minor argues, absurdly on its face, that the truthful person and the liar are the same person, because both require the same knowledge of truth and falsehood. The hosts treat this as a deliberate provocation rather than a serious conclusion, one meant to expose a deeper question: does competence at a skill amount to virtue, or are the two entirely different things.
The dialogue opens with Hippias praising Achilles as best of the Greeks and Odysseus as wiliest, without yet calling either man truthful or deceptive. Socrates introduces those terms himself, casting Achilles as simple and honest and Odysseus as a liar, and then argues that lying well requires knowing the truth, so the accomplished liar and the honest man share one underlying capacity. The hosts locate the sleight of hand here: Socrates slides from dunamis, a shared capacity to tell truth from falsehood, to the claim that liar and truth-teller are the same in disposition, or hexis. Aristotle later makes this distinction explicit in the Metaphysics, insisting that being able to do something is not the same as being inclined to do it. The hosts work through examples, singing badly on purpose, losing a game deliberately, to show that convincing failure is itself a further skill, distinct from simply lacking skill.
This connects to the Socratic claim that no one does wrong knowingly, since wrongdoing is treated as a failure of knowledge rather than a choice against it. The strongest objection raised comes from Augustine, who argued that people do sometimes do wrong knowingly, out of something like rebellion against expectation or against God. The hosts take this as a genuine psychological challenge to Socratic intellectualism rather than a misunderstanding of it. They also debate, without fully resolving, whether capacity and disposition are hierarchically related, including a case of a weak person acting nobly despite lacking the power to succeed, which raises a Kantian-flavored question about whether good intention counts as virtue even without effective capacity.
The conversation leaves open whether virtue can be taught as a technical skill, the way Hippias teaches rhetoric or shoemaking, or whether it requires something closer to a changed disposition. That question is worth sitting with before assuming competence and character are the same thing.
Strongest arguments
Hippias conflates general competence with virtue
11:05Hippias teaches a wide range of practical skills, from rhetoric to shoemaking, and treats broad competence as equivalent to virtue. The hosts note that Socrates does not attack him as a corrupt sophist the way he attacks Gorgias or Protagoras, but instead targets this conflation of skill with moral goodness directly.
Socrates sets up a contrast between Achilles and Odysseus
13:24Hippias praises Achilles as best and Odysseus as wiliest, without initially calling one truthful and the other a liar. Socrates introduces the terms simple and truthful for Achilles and liar for Odysseus, setting up a dilemma he will later overturn.
The capacity to lie implies the capacity to tell the truth
20:00Socrates argues that a liar must know the truth in order to lie effectively, and therefore must also be capable of telling the truth intentionally. This leads him to the paradoxical claim that the truthful person and the liar are the same person, since both share the same underlying knowledge.
The argument equivocates on capacity and disposition
22:19The hosts argue the dialogue's central trick is sliding from dunamis, the shared capacity or power to tell truth from falsehood, to the claim that liar and truth-teller are dispositionally identical. Aristotle later names this conflation explicitly in the Metaphysics, insisting that being able to do something is not the same as being disposed to do it.
Practical and theoretical knowledge differ in kind
28:14The hosts work through examples, singing out of tune, playing tennis badly on purpose, abstract painting, to show that genuine skill includes the ability to convincingly fail, which is itself a further skill. This illustrates that knowing a domain theoretically is different from the practical, embodied knowledge involved in lying or losing on purpose.
Augustine's objection to the Socratic claim
42:37One host raises Augustine's view that people do knowingly do wrong, which he calls sin, partly as rebellion against expectation or against God, directly opposing the Socratic and Platonic claim that no one does wrong knowingly. Another host agrees this captures something psychologically real about wanting to resist an external good.
Whether capacity implies disposition reflects cultural assumptions
40:23One host suggests Hippias's easy agreement that capacity and disposition align may reflect a genuine cultural assumption, tied to a teleological view that everyone aims at the good. Another host connects this to the sophistic and modern self-help model of virtue as a trainable skill, contrasted with a therapeutic model that targets deeper dispositions.
Disagreements
Whether capacity and disposition are hierarchically linked
44:11One host argues that capacity and disposition are hierarchical: having the capability to act virtuously or not is a precondition for virtue, so capacity in a sense comes first. Another host pushes back with a Kantian-flavored worry about whether we should admire good intentions even absent effective capacity, questioning whether impotent goodwill counts as real virtue.
Socrates and Augustine on whether anyone does wrong knowingly
42:37The dialogue, as the hosts present it, has Socrates arguing no one knowingly does evil, since wrongdoing stems from ignorance. One host presents Augustine's explicit disagreement with this Platonic position, holding that people do knowingly do wrong as an act of rebellion, which the hosts treat as a serious counter to the Socratic intellectualist view.
Concepts discussed
- Virtue Excellence of character, understood by the Stoics as the sole good and the basis of happiness.
- virtue as knowledge The question of whether virtuous action is reducible to knowing what is good, a central Socratic and Platonic theme.
Philosophers and works discussed
- Plato
- Socrates
- Aristotle
- Hippias
- Hippias Minor By Plato.
Questions this episode answers
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What is the main argument of Plato's Hippias Minor?
20:00Socrates argues that the person who lies intentionally must possess the same knowledge as the person who tells the truth intentionally, leading to the paradoxical conclusion that the truthful person and the liar are the same. The hosts treat this as a deliberately absurd argument meant to provoke reflection on whether competence and virtue are the same thing.
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What is the difference between dunamis and hexis in Aristotle?
39:07Dunamis is a capacity or power to do something, while hexis is a disposition or habitual tendency to actually do it. Aristotle uses this distinction, in his critique of the Hippias Minor argument in the Metaphysics, to show that being able to lie does not mean one is disposed to lie.
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Why does Socrates say no one does wrong knowingly?
8:48Socrates holds that wrongdoing results from ignorance, since if someone truly knew the good they would act on it, making knowledge and virtue closely linked. The hosts note this is the Socratic intellectualist position that underlies the seemingly absurd arguments of the Hippias Minor.
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How did Augustine respond to the Platonic claim that no one sins knowingly?
42:37Augustine argued against Plato that people do knowingly do wrong, calling this sin, and attributed it partly to a kind of rebellion against expectation or against God rather than ignorance. The hosts treat this as a serious psychological challenge to Socratic intellectualism.
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What is the Sophist view that virtue can be taught like a skill?
41:08Sophists like Hippias treated virtue as a technical skill, teachable through training in various practical arts such as rhetoric, shoemaking, and clothes-making. The hosts compare this to a modern self-help model that assumes learning techniques alone will make a person virtuous, contrasted with a therapeutic model targeting deeper dispositions.
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What is the contrast between Achilles and Odysseus in Homer according to Plato's Hippias Minor?
13:24Hippias initially presents Achilles as the best of the Greeks and Odysseus as the wiliest, without directly calling either truthful or false. Socrates then introduces the idea that Achilles is simple and truthful while Odysseus is a liar, setting up the dialogue's central paradox.