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Plato Quotes About Ethics

Browse 11 quotations connecting Plato with Ethics, with meanings, source notes and related themes.

Reading guide

Ethical choices, justification and competing answers in Plato

The ethics collection brings together eleven quotations from seven distinct dialogues, but it is not a second list of definitions of justice or virtue. The connecting question is how a person can defend a choice when self-interest, loyalty and a proposed account of the good collide. In The Republic Book I, Socrates tests Polemarchus’s claim that friends deserve help and enemies harm, and later asks Thrasymachus whether justice is good for the soul. The Book I question about the way one should live makes the stakes of that debate explicit; it is preserved from Jowett’s third-edition wording, a different witness from the other Republic excerpts. The discussion concludes without Socrates claiming that he has fully established what justice is. These are steps in an argument, not standalone statements of a universal ethical rule.

Crito moves from disputation to a costly decision: Socrates is in prison, and Crito wants him to escape. Socrates asks whether he should continue to honor principles he has accepted even when the consequence is severe, including his distinction between merely surviving and living justly. The dialogue’s imagined speech by the Laws complicates any simple reading as either unquestioning obedience to authority or an unlimited license to break it. In Laws Book IX, a different speaker—the Athenian Stranger, not Socrates—proposes that injustice involves the domination of fear, anger, pleasure or desire, while drafting a legal framework for an imagined city. Gorgias stages an explicit objection to the ideal of self-mastery: Socrates recommends temperance, but Callicles attacks restraint. Neither discussion supplies modern experimental evidence about emotion or human psychology.

The remaining dialogues ask what makes a moral claim defensible in the first place. In Meno, Socrates provisionally reasons that virtue must depend wholly or partly on wisdom, then reopens whether virtue can be taught. In Protagoras, he asks whether justice, temperance and holiness are distinct parts of virtue or different descriptions of one excellence; Protagoras proposes an answer, and the debate continues. Lysis approaches ethical value more indirectly through friendship: Socrates considers whether there is something ultimately cherished for itself, before finding further difficulties and ending without a settled account. Read these indirect, disputed and provisional arguments with their named speakers and source contexts. Ethics here is a route through practical decisions and reasons offered for them, not an extra set of motivational slogans or claims spoken autobiographically by Plato.

Sources

Where these ethics quotations appear

Sources represented here include The Republic, Crito, Gorgias.

11 shown
Quotations

11 matching quotations with meanings and source context

Source identified1
Ought a man to do what he admits to be right, or ought he to betray the right?
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“Ought a man to do what he admits to be right, or ought he to betray the right?”

Voice: Dialogue speaker · Socrates

Socrates asks whether acting on one’s considered judgment about right and wrong should be set aside when the costs are severe. In the prison conversation, the question tests whether escaping a wrongful sentence can be justified under the principles he and Crito have accepted.

Source details

Crito, Socrates questioning Crito during the prison discussion after establishing a rule against retaliation; Benjamin Jowett English translation, Project Gutenberg #1657. The sentence begins after Socrates says he will put the next point as a question. The question is not an unqualified defense of obedience to every law; the dialogue stages an argument about obligations to the city.

Source identified2
And I should like to know whether I may say the same of another proposition—that not life, but a good life, is to be chiefly valued?
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“And I should like to know whether I may say the same of another proposition—that not life, but a good life, is to be chiefly valued?”

Voice: Dialogue speaker · Socrates

Socrates asks Crito to value the moral quality of living over the mere continuation of life. This is part of his reasoning about whether escaping from prison would violate principles he already accepts, rather than an abstract invitation to sacrifice life without considering circumstances.

Source details

Plato, Crito, approximately 48b, Socrates speaking with Crito in prison; Benjamin Jowett public-domain English, Gutenberg #1657. The conditional question occurs in the dramatic text after a discussion of justice, public opinion and fear of execution. Socrates is the dramatic speaker; it is not a recorded autobiographical quotation by Plato.

Source identified3
A simple thing enough; just what is commonly said, that a man should be temperate and master of himself, and ruler of his own pleasures and passions.
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“A simple thing enough; just what is commonly said, that a man should be temperate and master of himself, and ruler of his own pleasures and passions.”

Voice: Dialogue speaker · Socrates

Socrates describes moderation as governing one’s own appetite and impulses rather than merely exercising power over other people. Callicles immediately challenges this view and praises satisfying desires without restraint. The passage is an argument in a dispute about happiness and the good life, not modern evidence about psychology or a claim that feelings should be suppressed.

Source details

Plato, Gorgias, approximately Stephanus 491d–e, Socrates answering Callicles’s question about ruling oneself. Callicles promptly disputes the value of temperance. Full sentence in Benjamin Jowett’s English translation, Project Gutenberg #1672, within the Gorgias dialogue proper (not Jowett’s introductory essay). Socrates is the local dramatic speaker; the line is not Plato’s autobiographical speech. An ancient ethical argument, not experimental mental-health evidence.

Source identified4
When anger and fear, and pleasure and pain, and jealousies and desires, tyrannize over the soul, whether they do any harm or not—I call all this injustice.
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“When anger and fear, and pleasure and pain, and jealousies and desires, tyrannize over the soul, whether they do any harm or not—I call all this injustice.”

Voice: Dialogue speaker · Athenian Stranger

The Athenian Stranger defines injustice in terms of uncontrolled impulses ruling a person, even before judging the harmful consequences of a particular act. He is distinguishing a disordered character from the later task of classifying and punishing wrongdoing under civic law.

Source details

Laws, Book IX, the Athenian Stranger replying to Cleinias while designing criminal laws for an imagined city. Benjamin Jowett English translation, Project Gutenberg #1750. This is the concluding clause of a longer first-person definition that begins “And now I can define to you clearly”; preserving it as an extract does not make it a remark by Socrates (who is absent from Laws).

Source identified5
And the truly dear or ultimate principle of friendship is not for the sake of any other or further dear.
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“And the truly dear or ultimate principle of friendship is not for the sake of any other or further dear.”

Voice: Dialogue speaker · Socrates

Socrates examines whether some cherished thing can be valued for its own sake rather than only because it leads to another benefit. He advances a possible ultimate object of friendship, but the argument immediately faces further questions and the dialogue finishes without an agreed definition. Reading this as a tested hypothesis prevents the line from becoming a misleading slogan about ideal friendship.

Source details

Plato, Lysis, approximately 219c–d, Socrates speaking with Lysis and Menexenus; Benjamin Jowett English, Project Gutenberg #1579. The sentence follows a chain of examples of things desired for other things, and Socrates soon reopens the argument by asking whether friendship depends on evil. It is a provisional dialectical step, not a conclusive formula offered by Plato.

Source identified6
And thus we arrive at the conclusion that virtue is either wholly or partly wisdom?
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“And thus we arrive at the conclusion that virtue is either wholly or partly wisdom?”

Voice: Dialogue speaker · Socrates

Socrates arrives at a conditional suggestion that a good character may depend wholly or partly on wisdom. His question follows a discussion of how judgment guides courage and other qualities toward good outcomes. It is not a final definition: he soon reopens the question by doubting whether virtue can be taught and whether suitable teachers exist.

Source details

Plato, Meno, approximately Stephanus 89a; Socrates is questioning Meno after connecting the usefulness of virtues with wise guidance. The conclusion is provisional and is challenged shortly afterwards when they examine the absence of recognized teachers of virtue. Exact complete sentence in Benjamin Jowett English, Project Gutenberg #1643, dialogue proper (not translator introduction); the historical Plato is not the speaking character.

Source identified7
Now I want you to tell me truly whether virtue is one whole, of which justice and temperance and holiness are parts; or whether all these are only the names of one and the same thing: that is the doubt which still lingers in my mind.
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“Now I want you to tell me truly whether virtue is one whole, of which justice and temperance and holiness are parts; or whether all these are only the names of one and the same thing: that is the doubt which still lingers in my mind.”

Voice: Dialogue speaker · Socrates

Socrates challenges Protagoras to clarify whether moral excellences such as justice, temperance and holiness make up different parts of a single virtue or name the same property. The question tests the structure of virtue rather than giving the reader an easy definition. Protagoras proposes an analogy with distinct parts of a face, and their discussion goes on to scrutinize the claim.

Source details

Plato, Protagoras, approximately Stephanus 329c–d; Socrates asks Protagoras about the unity of virtue after the sophist describes civic instruction and the acquisition of good character. Protagoras, not Socrates, answers that its qualities are distinct parts. Exact sentence from Benjamin Jowett English, Project Gutenberg #1591, in the dialogue proper after the opening philosophical and mythic arguments, not in translator commentary.

Source identified8
And we have admitted that justice is the excellence of the soul, and injustice the defect of the soul?
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“And we have admitted that justice is the excellence of the soul, and injustice the defect of the soul?”

Voice: Dialogue speaker · Socrates

Socrates treats justice as a quality by which a soul performs its work well, rather than simply an advantage in public reputation or trade. This concluding question ties the earlier inquiry about justice to the dialogue’s claim about how people live.

Source details

The Republic, Book I, close of Socrates’s argument with Thrasymachus about the function and excellence of the soul. Benjamin Jowett English translation, Project Gutenberg #1497. It belongs to a provisional exchange that ends with Socrates acknowledging that the inquiry has not fully determined what justice is; it is not a scientific claim about the soul.

Source identified9
Then to injure a friend or any one else is not the act of a just man, but of the opposite, who is the unjust?
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“Then to injure a friend or any one else is not the act of a just man, but of the opposite, who is the unjust?”

Voice: Dialogue speaker · Socrates

Socrates argues that deliberately harming another person cannot be a proper exercise of justice, including when someone calls the target an enemy. This challenges the earlier suggestion that a just person should help friends and hurt enemies.

Source details

The Republic, Book I, Socrates replying to Polemarchus in the examination of the maxim that justice helps friends and harms enemies. Benjamin Jowett English translation, Project Gutenberg #1497. The source presents a question in dialogue, not a standalone personal motto from Plato; the moral argument considers whether hurting someone can make that person better.

Source identified10
Is the attempt to determine the way of man’s life so small a matter in your eyes—to determine how life may be passed by each one of us to the greatest advantage?
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“Is the attempt to determine the way of man’s life so small a matter in your eyes—to determine how life may be passed by each one of us to the greatest advantage?”

Voice: Dialogue speaker · Socrates

In Book I Socrates refuses to treat the dispute about justice as mere verbal sparring, because the argument bears on the kind of life people should choose. He addresses Thrasymachus while challenging whether injustice really benefits a person; his question does not settle that dispute on its own.

Source details

Plato, The Republic, Book I, around 344e, Socrates in dialogue with Thrasymachus. Wording verified in Benjamin Jowett, third edition (1888), transcribed in Gutenberg #55201. This is dialogue speech following Thrasymachus’s defence of injustice, not the translator’s prefatory analysis. Edition-specific wording must be preserved.

Source identified11
And ought not the rational principle, which is wise, and has the care of the whole soul, to rule, and the passionate or spirited principle to be the subject and ally?
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“And ought not the rational principle, which is wise, and has the care of the whole soul, to rule, and the passionate or spirited principle to be the subject and ally?”

Voice: Dialogue speaker · Socrates

Socrates argues that self-government involves a rational faculty attending to the whole person while spirited impulses support its judgment. The passage is a question within his analogy between a well-ordered city and the three parts of the soul. It does not mean that all emotion should be suppressed or that Plato established a modern psychological theory.

Source details

Plato, The Republic, Book IV, approximately 441e–442a; Socrates addressing Glaucon while contrasting the rational, spirited and appetitive parts of the soul. Exact sentence from Benjamin Jowett English, Project Gutenberg #1497, Book IV main dialogue (not introductory editorial matter). The premise belongs to an ancient account of the soul and remains open to philosophical interpretation; not clinical or neuroscientific evidence.

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