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Truth quotes

Source-backed quotations about honesty, reality, self-deception, integrity, knowledge, and the cost of seeing clearly.

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Best Truth Quotes

30 editorial picks

A focused selection about truth, falsehood, honesty, facts, error, sincerity and the difficulty or freedom involved in facing what is true. The wider collection retains adjacent philosophy, justice, speech and knowledge material.

Source identified1
There is a vital difference between error and untruthfulness.

“There is a vital difference between error and untruthfulness.”

Being mistaken is separated from intentional falsehood, which allows honest uncertainty and correction without confusing every factual error with deceit.

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The Power of Truth, opening chapter, Project Gutenberg #56020; Jordan distinguishes sincere error from deliberate untruthfulness.

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We must know the truth; and we must avoid error.

“We must know the truth; and we must avoid error.”

James separates two intellectual duties—seeking truth and avoiding falsehood—to show that prioritizing one over the other can produce different habits of belief and inquiry.

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The Will to Believe, essay “The Will to Believe”; Project Gutenberg #26659. James immediately argues that truth-seeking and error-avoidance are distinct laws rather than two phrasings of one command.

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A liar will not be believed, even when he speaks the truth.

“A liar will not be believed, even when he speaks the truth.”

Voice: Fictional character · Wise man of the village

Repeated deception damages credibility beyond the original lie: once listeners have learned to expect false alarms, even a later truthful warning can fail to restore belief in time.

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Joseph Jacobs, The Fables of Aesop, “The Shepherd Boy and the Wolf,” Project Gutenberg #28. The wise man of the village gives the moral after the boy’s repeated false cries cause the villagers to ignore his real warning.

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And, after all, what is a lie? ’T is but The truth in masquerade;

“And, after all, what is a lie? ’T is but The truth in masquerade;”

Byron’s narrator jokingly blurs truth and falsehood as part of a satirical attack on how historians, politicians and storytellers shape facts through presentation.

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Don Juan, Canto XI, stanza XXXVII, represented by the Wikisource canto transcription. “And, after all, what is a lie?” begins Byron’s comic narrator’s satire about historians, heroes, lawyers, poetry and prophecy mixing fact with presentation. It is deliberately ironic poetic narration, not a serious universal definition of lying.

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The Academy should be impartial in conduct; while it aims to exalt the people it should aim to do so by truth—not by lies, by honesty—not by flattery.

“The Academy should be impartial in conduct; while it aims to exalt the people it should aim to do so by truth—not by lies, by honesty—not by flattery.”

Du Bois argues that collective advancement requires truthful self-assessment rather than flattering narratives, making honesty part of responsible institutional leadership.

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The Conservation of Races, discussion of the American Negro Academy’s conduct; Project Gutenberg #5685. The line is a direct institutional principle within Du Bois’s 1897 address, while the essay’s period racial classifications remain historically contextualized.

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Certainly, it is heaven upon earth, to have a man's mind move in charity, rest in providence, and turn upon the poles of truth.

“Certainly, it is heaven upon earth, to have a man's mind move in charity, rest in providence, and turn upon the poles of truth.”

Bacon joins truth with charity and steadiness, presenting intellectual honesty as part of a well-ordered mind rather than a weapon for pride.

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Francis Bacon, 'Of Truth,' essay I in the 1625 Essays; independently checked against the validated 1884 Works of Francis Bacon, Volume I scan leaf 139. The retained sentence closes Bacon's theological/philosophical truth discussion by linking charity, providence and truth; it is explicitly early-modern Christian-philosophical rhetoric, not clinical or scientific evidence.

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His honesty is not policy.

“His honesty is not policy.”

Honesty is distinguished from strategy: a person of character tells the truth because it is right, not merely because truthfulness happens to be advantageous.

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The Power of Truth, opening chapter, Project Gutenberg #56020; Jordan rejects the phrase “honesty is the best policy” as too transactional.

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Falsehood is so easy, truth so difficult.

“Falsehood is so easy, truth so difficult.”

Voice: Narrator voice · Narrator

The narrator warns that invention and distortion can come more easily than an accurate rendering of reality, especially when a writer prefers a pleasing picture.

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Adam Bede, Book Second, Chapter XVII, “In Which the Story Pauses a Little,” Project Gutenberg #507. “Falsehood is so easy, truth so difficult” appears in Eliot’s narrator-level defence of realistic representation and the difficulty of saying the exact truth about people and feelings. It is literary-aesthetic argument inside the novel, not an empirical psychology result.

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Convictions are more dangerous enemies of truth than lies.

“Convictions are more dangerous enemies of truth than lies.”

Nietzsche warns that fixed certainty can block revision more effectively than an obvious falsehood because conviction can make contrary evidence harder to examine.

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Human, All-Too-Human, Part I, aphorism 483, “The Enemies of Truth”; Helen Zimmern translation, 1909 edition.

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Does truth matter—clean, cold, unfriendly truth, Max Gottlieb’s truth?

“Does truth matter—clean, cold, unfriendly truth, Max Gottlieb’s truth?”

Martin questions whether his commitment to exact scientific truth is an ethical necessity or merely one personal passion among many competing human desires.

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Arrowsmith, represented by Project Gutenberg #70875. The sentence is Martin Arrowsmith’s internal question during a conflict over public-health claims and scientific precision; it is fictional moral-scientific reflection, not medical advice.

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Let her and Falsehood grapple; who ever knew Truth put to the worse, in a free and open encounter?

“Let her and Falsehood grapple; who ever knew Truth put to the worse, in a free and open encounter?”

Milton argues that confidence in truth should make room for open contest rather than prior censorship: ideas gain strength by being tested publicly against what may be false.

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Areopagitica, Project Gutenberg #608. The sentence appears in Milton’s argument against licensing and prior restraint on printing. It is a defense of open intellectual encounter, not a claim that every expression is harmless or beyond later judgment.

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Wherefore putting away lying, speak every man truth with his neighbour: for we are members one of another.

“Wherefore putting away lying, speak every man truth with his neighbour: for we are members one of another.”

The verse connects truthful speech with mutual dependence: honesty matters because people live in relationship rather than as isolated individuals.

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Ephesians 4:25 in the King James Version.

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Science, my lad, has been built upon many errors; but they are errors which it was good to fall into, for they led to the truth.

“Science, my lad, has been built upon many errors; but they are errors which it was good to fall into, for they led to the truth.”

Professor Lidenbrock argues that mistaken hypotheses can still advance inquiry when testing them exposes better explanations.

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A Journey into the Interior of the Earth, Chapter XXXI, ‘Preparations for a Voyage of Discovery,’ represented by Project Gutenberg #3748 in F. A. Malleson's 1877 English translation. Professor Lidenbrock says that science has been built upon many errors after underground observations conflict with accepted heat theory. It remains translated speculative-adventure dialogue and a character's philosophy of scientific error, not a methodological rule supplied by Quote Atlas or a current scientific finding.

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Truth happens to an idea.

“Truth happens to an idea.”

The compact formulation summarizes James’s pragmatic account in which an idea’s truth is connected with processes of verification and validation rather than treated only as a static label.

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Pragmatism, Lecture VI, “Pragmatism’s Conception of Truth”; Project Gutenberg #5116. Capitalization has been normalized from “Truth HAPPENS to an idea”; the surrounding passage explains verification and validation.

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Stand for truth, and ’tis enough.

“Stand for truth, and ’tis enough.”

Jonson argues that loyalty should attach to what is true rather than to a teacher, sect or personal faction.

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Timber, or Discoveries Made Upon Men and Matter, represented by Project Gutenberg #5134. Jonson follows the sentence with his refusal to have readers defend a position merely because it is his; the aphorism belongs to a direct prose reflection on independent judgment and truth.

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truth is truth only when it is in action

“truth is truth only when it is in action”

Tolstoy argues that truth becomes socially consequential when embodied in conduct rather than remaining only an inward opinion or abstract proposition.

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My Religion, Chapter XII; Huntington Smith translation, represented 1885 Crowell edition, Project Gutenberg #43794. In the concluding chapter Tolstoy argues that truth becomes transmissible when embodied in action and brought to individual conscience; the explicitly Christian and social context remains visible.

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Beauty is truth, truth beauty

“Beauty is truth, truth beauty”

The compressed closing formula binds beauty and truth inside the ode’s meditation on art, inviting interpretation rather than offering a settled philosophical definition.

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“Ode on a Grecian Urn,” in Keats: Poems Published in 1820; Project Gutenberg #23684. The words are presented as the urn’s closing message, so the source page preserves the dramatic-poetic framing.

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The truth is rarely pure and never simple.

“The truth is rarely pure and never simple.”

Voice: Fictional character · Algernon Moncrieff

Wilde resists neat moral simplification by reminding the reader that truth often arrives mixed with context and contradiction.

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The Importance of Being Earnest, Act I; Algernon Moncrieff. Exact catalog wording is preserved in the scan-backed Samuel French acting text on Wikisource, scan leaf 14 / printed page 12. The acting-text witness is abridged elsewhere, so this record is bound only to its independently verified page.

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I speak truth, not so much as I would, but as much as I dare.

“I speak truth, not so much as I would, but as much as I dare.”

Frank self-description has limits, but Montaigne still treats increasing candor as part of the value of writing honestly about oneself.

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Essays of Montaigne, Book III, Chapter II, “Of Repentance,” Charles Cotton translation; Project Gutenberg Volume 14 #3594 / Complete Essays #3600. The surrounding passage treats fidelity and increasingly candid self-report as part of the Essays’ project.

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The truth seems to be that it is impossible to lay the ghost of a fact.

“The truth seems to be that it is impossible to lay the ghost of a fact.”

Marlow reflects that an established event can continue to shape reputation and self-understanding even after a person tries to escape its consequences.

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Lord Jim, Project Gutenberg #5658. Marlow’s narration concerns Jim’s effort to live beyond the Patna scandal; the sentence is literary reflection on memory, fact and moral consequence.

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Artistic growth is, more than it is anything else, a refining of the sense of truthfulness.

“Artistic growth is, more than it is anything else, a refining of the sense of truthfulness.”

Cather’s narrator presents artistic development as increasingly exact honesty about perception and expression rather than as mere technical display or sudden inspiration.

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The Song of the Lark, Part VI, Chapter X, Project Gutenberg #44. ‘Artistic growth is... a refining of the sense of truthfulness’ is narrator reflection immediately after Harsanyi calls passion the artist's ‘open secret’ and as Thea Kronborg comes into fuller command of her mature performance. It belongs to Cather's fictional account of artistic formation and performance, not an empirical measurement of artistic development or a guarantee that all artists mature in the same way.

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It is not in being rich that truth and justice would rejoice, but in being trusted and believed.

“It is not in being rich that truth and justice would rejoice, but in being trusted and believed.”

The passage separates moral reputation from wealth: truthfulness and justice seek the confidence of other people rather than riches as their characteristic reward.

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The Theory of Moral Sentiments, Part III; this sentence immediately follows Smith’s contrast between humanity seeking love and industry receiving external success.

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I saw that that was life itself and that the meaning given to this life was truth, and I accepted it.

“I saw that that was life itself and that the meaning given to this life was truth, and I accepted it.”

The search for meaning ends here in acceptance of a lived framework Tolstoy regards as true, emphasizing that meaning is not merely an abstract proof but something embodied in life.

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My Confession, Leo Wiener translation; the sentence belongs to Tolstoy’s account of accepting a meaning of life he believed was demonstrated in the lives of the people he had studied.

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truth, in morals, has ever appeared to me the essence of the sublime; and, in taste, simplicity the only criterion of the beautiful.

“truth, in morals, has ever appeared to me the essence of the sublime; and, in taste, simplicity the only criterion of the beautiful.”

Wollstonecraft makes moral truth and aesthetic simplicity standards of seriousness, rejecting ornate politeness when it conceals what a writer actually believes.

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A Vindication of the Rights of Men, opening letter to Edmund Burke, second edition (1790); this sentence follows Wollstonecraft’s refusal to disguise her sentiments behind courtly politeness.

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Truth, crushed to earth, shall rise again;

“Truth, crushed to earth, shall rise again;”

Bryant expresses confidence that truth can survive temporary defeat and re-emerge even when public power, violence or opinion appears to have buried it.

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“The Battlefield,” represented in Project Gutenberg #29700. The line belongs to a civic-religious meditation on conflict, sacrifice and moral endurance; its resurrection imagery expresses poetic conviction rather than a literal law of history.

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Truth will come to light; murder cannot be hid long.

“Truth will come to light; murder cannot be hid long.”

Voice: Fictional character · Launcelot Gobbo

Hidden wrongdoing may remain concealed for a time, but the line expresses confidence that facts and consequences tend eventually to surface.

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The Merchant of Venice, Act 2, Scene 2; Launcelot uses the phrase while revealing his identity to his father.

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Rather than love, than money, than fame, give me truth.

“Rather than love, than money, than fame, give me truth.”

Thoreau places truth above three powerful human desires, making the sentence a compact statement of intellectual and moral priority.

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Walden, Conclusion; Thoreau closes the book by contrasting outward wealth and status with the inner quality of a person’s life.

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Truthfulness is at the foundation of all personal excellence.

“Truthfulness is at the foundation of all personal excellence.”

Personal excellence is grounded in truthfulness because habits of distortion eventually weaken trust, judgment, and the consistency between principle and action.

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Character, Chapter I, “Influence of Character,” Project Gutenberg #2541. Smiles places the sentence in his discussion of veracity and reliableness, arguing that talent or genius cannot command durable confidence unless conduct can be trusted.

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It is a mistake always to contemplate the good and ignore the evil

“It is a mistake always to contemplate the good and ignore the evil”

Keller explicitly rejects an optimism that refuses to see harm, making clear-eyed attention to difficult facts part of her constructive outlook.

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Optimism: An Essay (1903), Project Gutenberg #31622. The following paragraph calls ignorant or indifferent optimism dangerous and false.

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unless all this training of head and hand is based upon high, upright character, upon a true heart, it will amount to nothing.

“unless all this training of head and hand is based upon high, upright character, upon a true heart, it will amount to nothing.”

Knowledge and practical skill are not sufficient in Washington’s educational ideal unless they are joined to the character with which those abilities are used.

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Character Building, “What Would Father and Mother Say?”, Project Gutenberg #60484. This is Washington’s normative theory of education and character, not a modern educational outcome study.

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If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties.

“If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties.”

Intellectual confidence can be improved by beginning with questions rather than pretending certainty too early.

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The Advancement of Learning, First Book, Project Gutenberg #5500, transcribed from the 1893 Cassell & Company edition. Bacon contrasts impatience of doubt with mature suspension of judgment and then sets out two ways of contemplation before saying that beginning with certainties ends in doubts while beginning with doubts can end in certainties. It remains early-modern epistemological argument rather than a modern experimental rule for scientific method.

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Above all, don’t lie to yourself.

“Above all, don’t lie to yourself.”

Voice: Fictional character · Father Zossima

Self-deception is presented as especially damaging because it corrupts the person’s ability to recognize truth both inwardly and around them.

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The Brothers Karamazov, Book II, Chapter 4, “A Lady of Little Faith,” Constance Garnett translation, verified against Project Gutenberg #28054 and Wikisource. Father Zossima tells the visitor, “Above all, don’t lie to yourself,” and develops the warning into an argument about self-deception, respect and love; this is fictional character counsel inside the novel.

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I like good strong words that mean something.

“I like good strong words that mean something.”

Voice: Fictional character · Jo March

Clear language is valued for carrying substance instead of decoration, especially when words are meant to guide action or understanding.

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Little Women, Chapter 4, “Burdens,” Project Gutenberg #514. Jo March replies “I like good strong words that mean something” after Meg objects to Jo calling them ungrateful “wretches.” The line is fictional character dialogue about Jo’s blunt language and personality, not Alcott speaking autobiographically.

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All warfare is based on deception.

“All warfare is based on deception.”

Strategy depends partly on managing what an opponent believes about intentions, strength, timing, and position rather than revealing every fact directly.

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The Art of War, Chapter I 'Laying Plans,' section 18, Lionel Giles translation (1910), original scan leaf 62. 'All warfare is based on deception' begins Giles's section 18 before the examples of seeming unable, inactive, near or far. This remains translation-mediated ancient military strategy, not generic business, relationship or current operational advice.

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those know little of real love or grief who do not know how much we deceive ourselves when we pretend to aim at the cure of either.

“those know little of real love or grief who do not know how much we deceive ourselves when we pretend to aim at the cure of either.”

Voice: Fictional character · Captain William Booth

Booth recognizes that people may claim to be curing love or grief while unconsciously choosing actions that keep those feelings alive.

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Amelia, Book II, Chapter III, “The narrative continued. More of the touchstone,” Project Gutenberg #6098, George Saintsbury edited witness. Captain Booth says the love / grief sentence while recounting his failed attempts to cure himself of attachment to Amelia. It is fictional retrospective speech, not clinical guidance about grief or relationships.

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I have been a slave—I have felt what a slave feels, and I know what a slave knows; and I would have all the good people in England to know it too, that they may break our chains, and set us free.

“I have been a slave—I have felt what a slave feels, and I know what a slave knows; and I would have all the good people in England to know it too, that they may break our chains, and set us free.”

Prince grounds her abolitionist appeal in lived experience, insisting that people who have not endured slavery should hear testimony from those who have.

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The History of Mary Prince, a West Indian Slave, Related by Herself, 1831. Prince’s oral account was taken down for publication; the passage explicitly explains why she wanted English readers to know what slavery felt like from an enslaved person’s perspective.

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I am not young enough to know everything.

“I am not young enough to know everything.”

Barrie reverses the cliché that age brings complete wisdom, making youthful certainty—not age—the comic claim to omniscience.

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The Admirable Crichton, Act I, Project Gutenberg #3490. Ernest Woolley repeatedly delivers “I am not young enough to know everything” as a self-consciously clever epigram while Agatha, Treherne and the others struggle to understand it; Crichton later says he has no idea what Ernest meant. It remains fictional comic dialogue rather than J. M. Barrie autobiography or a factual claim about age and knowledge.

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The people must know before they can act, and there is no educator to compare with the press.

“The people must know before they can act, and there is no educator to compare with the press.”

Wells argues that public action against injustice depends on reliable information and therefore places special importance on journalism that investigates and publishes suppressed facts.

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Southern Horrors: Lynch Law in All Its Phases (1892), “SELF-HELP,” represented by Project Gutenberg #14975. Wells writes “The people must know before they can act, and there is no educator to compare with the press” while explaining why Black newspapers needed resources to investigate and publish suppressed facts about lynching. This is historical anti-lynching journalism and civic argument, not a general empirical rule about media effects.

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The unreasonableness of a thing is no argument against its existence, but rather a condition thereof.

“The unreasonableness of a thing is no argument against its existence, but rather a condition thereof.”

The aphorism separates the fact that something exists from the expectation that existence must be rational or well ordered.

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Human, All-Too-Human, Part I, aphorism 515, “From Experience”; Helen Zimmern translation.

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I frame no hypotheses; for whatever is not deduced from the phenomena is to be called an hypothesis.

“I frame no hypotheses; for whatever is not deduced from the phenomena is to be called an hypothesis.”

Newton distinguishes conclusions inferred from observed phenomena from explanations he regards as unsupported speculation within the methodological argument of the General Scholium.

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Philosophiæ Naturalis Principia Mathematica, General Scholium, added to the second edition in 1713; represented by the 1846 Andrew Motte English translation on Wikisource. “I frame no hypotheses” is kept inside Newton’s specific discussion of gravity and experimental philosophy rather than treated as a blanket prohibition on hypotheses in modern science.

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Reading is thinking with some one else's head instead of one's own.

“Reading is thinking with some one else's head instead of one's own.”

Reading supplies another mind’s thought, but Schopenhauer warns that consuming ideas should not replace the work of forming one’s own connected judgment.

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Essay “On Books and Reading,” in a public-domain English collection of Schopenhauer’s essays.

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What can be more delightful than to have some one to whom you can say everything with the same absolute confidence as to yourself?

“What can be more delightful than to have some one to whom you can say everything with the same absolute confidence as to yourself?”

Voice: Dialogue speaker · Gaius Laelius

Close friendship creates a rare space for frank speech because confidence in the other person removes the need for continual self-protection.

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Laelius on Friendship, translated by Evelyn S. Shuckburgh in Project Gutenberg’s Treatises on Friendship and Old Age.

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The scientific attitude of mind involves a sweeping away of all other desires in the interests of the desire to know—it involves suppression of hopes and fears, loves and hates, and the whole subjective emotional life, until we become subdued to the material, able to see it frankly, without preconceptions, without bias, without any wish except to see it as it is, and without any belief that what it is must be determined by some relation, positive or negative, to what we should like it to be, or to what we can easily imagine it to be.

“The scientific attitude of mind involves a sweeping away of all other desires in the interests of the desire to know—it involves suppression of hopes and fears, loves and hates, and the whole subjective emotional life, until we become subdued to the material, able to see it frankly, without preconceptions, without bias, without any wish except to see it as it is, and without any belief that what it is must be determined by some relation, positive or negative, to what we should like it to be, or to what we can easily imagine it to be.”

Inquiry becomes more reliable when the wish to know is allowed to challenge hopes, fears and preferences that would otherwise predetermine the answer.

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Mysticism and Logic and Other Essays, “The Place of Science in a Liberal Education.” Russell continues by describing an attempt to see material frankly, without preconception or wishful bias.

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And I would ask you to be thinking of the truth and not of Socrates: agree with me, if I seem to you to be speaking the truth; or if not, withstand me might and main, that I may not deceive you as well as myself in my enthusiasm, and like the bee, leave my sting in you before I die.
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“And I would ask you to be thinking of the truth and not of Socrates: agree with me, if I seem to you to be speaking the truth; or if not, withstand me might and main, that I may not deceive you as well as myself in my enthusiasm, and like the bee, leave my sting in you before I die.”

Voice: Dialogue speaker · Socrates

Facing death, Socrates asks his friends to challenge the argument he is defending if they find it mistaken. His emphasis is on testing whether a claim is true rather than accepting it because of the speaker’s reputation, even when that speaker is himself. The appeal belongs to a debate, not a universal guarantee that his view of the soul is correct.

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Phaedo, approximately Stephanus 91b–c, Socrates speaking to Simmias and Cebes after their objections to the arguments about the soul’s survival. He specifically asks them to contradict him if they think his reasoning is wrong. This is a complete sentence from Benjamin Jowett’s English translation, Project Gutenberg #1658, in the dialogue after the translator’s separate introduction. Socrates is a character and local speaker; do not attribute the sentence as a direct personal remark by Plato.

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Each of you is right, and none of you is wrong.

“Each of you is right, and none of you is wrong.”

The parable resists a simple either-or verdict by showing that apparently competing explanations can each describe part of a larger movement.

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The Forerunner, “The Two Learned Men”; the line concludes a parable about different explanations of motion and perspective.

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Such is the irresistible nature of truth, that all it asks,—and all it wants,—is the liberty of appearing.

“Such is the irresistible nature of truth, that all it asks,—and all it wants,—is the liberty of appearing.”

Paine links truth with open expression, arguing that its central requirement is the opportunity to be heard rather than protection from scrutiny.

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Rights of Man; represented in the public-domain Conway edition and kept in the work’s polemical political context.

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I think I have seen with impartial eyes, and I am sure I have written at least honestly, whether wisely or not.

“I think I have seen with impartial eyes, and I am sure I have written at least honestly, whether wisely or not.”

Twain distinguishes honest reporting from a claim to perfect judgment, presenting candor and acknowledged fallibility as part of his travel-writing method.

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The Innocents Abroad (1869), Preface. Twain says that he thinks he has seen with impartial eyes and is sure he has written honestly, while explicitly declining to claim perfect wisdom. Verified against the scan-backed 1869 first edition on Wikisource, original Preface page 19; this is authorial travel-writing method rather than a claim of objective infallibility.

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A hasty judgement is a first step to a recantation.

“A hasty judgement is a first step to a recantation.”

Rushing to a conclusion increases the chance that later evidence will force an embarrassing or costly reversal.

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The Moral Sayings of Publius Syrus, maxim 8, in Darius Lyman’s 1856 English rendering; maxim order can vary across editions.

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And yet, O my friend, if true opinion in law courts and knowledge are the same, the perfect judge could not have judged rightly without knowledge; and therefore I must infer that they are not the same.
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“And yet, O my friend, if true opinion in law courts and knowledge are the same, the perfect judge could not have judged rightly without knowledge; and therefore I must infer that they are not the same.”

Voice: Dialogue speaker · Socrates

Socrates argues that someone can arrive at a correct judgment on testimony without having witnessed or known the event firsthand. The example tests Theaetetus’s proposal that knowledge simply equals true opinion; the dialogue continues to investigate other proposed definitions rather than announcing a simple final formula.

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Theaetetus, around Stephanus 201a–c, Socrates explaining his law-court counterexample while speaking with Theaetetus. Benjamin Jowett English translation, Project Gutenberg #1726. The full sentence is spoken by Socrates in the dramatic dialogue, not from Jowett’s prefatory commentary; no claim is made about modern evidence law.

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When you have eliminated the impossible whatever remains, however improbable, must be the truth.

“When you have eliminated the impossible whatever remains, however improbable, must be the truth.”

Holmes presents elimination as a reasoning discipline: once genuinely impossible explanations are removed, attention must turn to the remaining explanation even when it initially seems unlikely.

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The Sign of the Four, Chapter VI, ‘Sherlock Holmes Gives a Demonstration,’ Project Gutenberg #2097. Holmes tells Watson that after eliminating impossible entry routes, ‘whatever remains, however improbable, must be the truth,’ then applies the precept to the locked-room investigation and the hole in the roof. It is fictional detective reasoning in a specific evidential setup, not a universal rule that any improbable remaining hypothesis is automatically true without sound premises or exhaustive elimination.

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There is no pre-established harmony between the promotion of truth and the welfare of mankind.

“There is no pre-established harmony between the promotion of truth and the welfare of mankind.”

Nietzsche rejects the comforting assumption that discovering truth must always coincide with human comfort or advantage.

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Human, All-Too-Human, Part I, aphorism 517, “A Fundamental Insight”; Helen Zimmern translation.

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Only by contact with evil could I have learned to feel by contrast the beauty of truth and love and goodness.

“Only by contact with evil could I have learned to feel by contrast the beauty of truth and love and goodness.”

Contrast with what she calls evil sharpens Keller’s appreciation of truth, love and goodness, tying gratitude to moral discernment rather than uncomplicated cheerfulness.

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Optimism: An Essay (1903), Project Gutenberg #31622. The sentence belongs to Keller’s personal moral and religious account of optimism.

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Man's freedom lies in the power of this choice.

“Man's freedom lies in the power of this choice.”

Tolstoy locates a limited but meaningful freedom in whether a person recognizes and acts upon the truth they believe they have understood.

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The Kingdom of God Is Within You, Chapter XII; Constance Garnett translation, Project Gutenberg #43302. In the concluding chapter Tolstoy locates human freedom in the recognition or rejection of truth already revealed to conscience; the sentence states that freedom lies in this choice.

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Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.

“Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.”

Voice: Fictional character · The Astronomer

Knowledge needs ethical direction, while good intentions need understanding; either quality becomes inadequate when separated from the other.

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Chapter 41; the Astronomer explains why both competence and moral character are needed for trust.

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Words should serve the fact, and not substitute themselves for it

“Words should serve the fact, and not substitute themselves for it”

Language is assigned a supporting role: words should clarify reality instead of becoming an impressive verbal screen that displaces the thing being discussed.

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The Simple Life, Chapter IV, “Simplicity of Speech,” Mary Louise Hendee translation, Project Gutenberg #23092; Wagner criticizes language that replaces fact with display.

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The reading of these documents enabled me to utter my thoughts, and to meet the arguments brought forward to sustain slavery.

“The reading of these documents enabled me to utter my thoughts, and to meet the arguments brought forward to sustain slavery.”

Education supplied language for ideas that had previously lacked expression, turning private awareness into arguments that could confront an unjust system.

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Narrative, Chapter VII; Douglass describes the effect of reading political dialogue and Sheridan’s speech on Catholic emancipation.

Source identified62
The foundation of justice, moreover, is good faith—that is, truth and fidelity to promises and agreements.

“The foundation of justice, moreover, is good faith—that is, truth and fidelity to promises and agreements.”

Justice depends on reliable commitments because social cooperation becomes unstable when promises and agreements are treated as optional whenever they become inconvenient.

Source details

De Officiis, Book I, section 23; Cicero defines good faith through truth and fidelity to promises and agreements.

Source identified63
Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passions, they cannot alter the state of facts and evidence.

“Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passions, they cannot alter the state of facts and evidence.”

Adams argues that judgment in a legal case should follow evidence even when emotion, public pressure or personal wishes point toward a preferred conclusion.

Source details

Closing defense argument in the Boston Massacre soldiers’ trial, December 1770, preserved by Founders Online. The line belongs to courtroom advocacy about evidence and due process in a specific criminal proceeding.

Source identified64
If all mankind minus one, were of one opinion, and only one person were of the contrary opinion, mankind would be no more justified in silencing that one person, than he, if he had the power, would be justified in silencing mankind.

“If all mankind minus one, were of one opinion, and only one person were of the contrary opinion, mankind would be no more justified in silencing that one person, than he, if he had the power, would be justified in silencing mankind.”

Mill makes the number of people holding an opinion irrelevant to their right to silence dissent: minority speech remains worth protecting even when nearly everyone else believes it wrong.

Source details

On Liberty, Chapter II, Project Gutenberg #34901. Mill’s next argument is epistemic as well as political: suppressing an opinion can deprive everyone of truth or of the clearer understanding created when truth is tested against error.

Source identified65
Read not to contradict and confute; nor to believe and take for granted; nor to find talk and discourse; but to weigh and consider.

“Read not to contradict and confute; nor to believe and take for granted; nor to find talk and discourse; but to weigh and consider.”

Bacon describes reading as active judgment rather than passive agreement or reflexive opposition, making careful consideration the central habit of serious study.

Source details

Of Studies, in Bacon’s instructions for how different kinds of books should be read.

Source identified66
There is no greatness where there is not simplicity, goodness, and truth.

“There is no greatness where there is not simplicity, goodness, and truth.”

Voice: Narrator voice · Narrator

Greatness is stripped of spectacle and measured instead by moral clarity, goodness, and freedom from unnecessary complication.

Source details

War and Peace; the narrator’s judgment of greatness appears in the novel’s discussion of Kutuzov, simplicity, goodness and truth.

Source identified67
One principal of action is sufficient—Respect thyself.

“One principal of action is sufficient—Respect thyself.”

Wollstonecraft makes self-respect a moral standard rather than self-flattery: conduct should remain compatible with one’s own sense of truth and justice instead of being reorganized around gaining a respectable social position.

Source details

An Historical and Moral View of the Origin and Progress of the French Revolution, Project Gutenberg #68724. Wollstonecraft connects “Respect thyself” with religion, justice and self-love while criticizing social arrangements that encourage people to sacrifice truthful character for status.

Source identified68
Sensibility is the manie of the day, and compassion the virtue which is to cover a multitude of vices, whilst justice is left to mourn in sullen silence, and balance truth in vain.

“Sensibility is the manie of the day, and compassion the virtue which is to cover a multitude of vices, whilst justice is left to mourn in sullen silence, and balance truth in vain.”

The polemical contrast warns that displays of feeling can become morally evasive when sympathy is praised while justice and truth are neglected.

Source details

A Vindication of the Rights of Men; Wollstonecraft is criticizing sentimental rhetoric in Burke, so the passage should not be read as a rejection of compassion itself.

Source identified69
Faith, therefore, allows the greatest latitude in philosophic speculation, allowing us without blame to think what we like about anything.

“Faith, therefore, allows the greatest latitude in philosophic speculation, allowing us without blame to think what we like about anything.”

Spinoza separates faithful conduct from enforced uniformity of speculation: people can differ widely in philosophical belief while still being judged by whether their teaching leads toward justice and charity rather than hatred.

Source details

A Theologico-Political Treatise — Part III, Chapter XIV, paragraph 77, Project Gutenberg #991. The frozen catalog preserves the opening of Spinoza’s longer sentence; the paragraph continues by condemning teachings tending toward obstinacy, hatred, strife and anger and praising justice and charity. This is seventeenth-century theological / political philosophy, not a modern empirical claim.

Source identified70
What he says has the ring of sincerity, the hallmark of pure gold.

“What he says has the ring of sincerity, the hallmark of pure gold.”

Sincerity is presented as a recognizable quality of speech that grows from consistency between what a person knows, believes and chooses to say.

Source details

The Power of Truth, opening chapter, Project Gutenberg #56020; the “pure gold” comparison belongs to Jordan’s description of sincere speech.

Topic guide

A quick guide to truth

Philosophical quotations are useful when they open a question rather than close it. A short line about truth, freedom, time, or meaning usually belongs to a larger argument.

Reading lenses

Evidence and honestyUncomfortable factsSelf-deception and clarityTruth joined with judgment

How to use this page

Treat each quotation as an entry point. Compare authors, inspect the named source, and notice where two memorable lines offer incompatible answers to the same question.

Choose the lens that matches what you are looking for, then open a quotation for its source and context.

Browse by reading angle

Choose a way into these truth quotes

These routes are drawn from the quotations loaded on this page and are meant as starting points, not extra topic labels.

Short & memorable

Concise lines for readers who want the core idea without a long passage.

  1. “There is a vital difference between error and untruthfulness.” — William George Jordan · The Power of Truth: Individual Problems and Possibilities
  2. “We must know the truth; and we must avoid error.” — William James · The Will to Believe, and Other Essays in Popular Philosophy
  3. “A liar will not be believed, even when he speaks the truth.” — Aesop · Aesop’s Fables — The Shepherd Boy and the Wolf
  4. “And, after all, what is a lie? ’T is but The truth in masquerade;” — Lord Byron · Don Juan — Canto XI
  5. “His honesty is not policy.” — William George Jordan · The Power of Truth: Individual Problems and Possibilities

Reflective & philosophical

Quotations connected with deeper interpretation, perspective, philosophy, or sustained thought.

  1. “There is a vital difference between error and untruthfulness.” — William George Jordan · The Power of Truth: Individual Problems and Possibilities
  2. “We must know the truth; and we must avoid error.” — William James · The Will to Believe, and Other Essays in Popular Philosophy
  3. “A liar will not be believed, even when he speaks the truth.” — Aesop · Aesop’s Fables — The Shepherd Boy and the Wolf
  4. “And, after all, what is a lie? ’T is but The truth in masquerade;” — Lord Byron · Don Juan — Canto XI
  5. “Certainly, it is heaven upon earth, to have a man's mind move in charity,…” — Francis Bacon · Of Truth

Growth through difficulty

Material about failure, adversity, recovery, resilience, or learning from pressure.

  1. “There is a vital difference between error and untruthfulness.” — William George Jordan · The Power of Truth: Individual Problems and Possibilities
  2. “We must know the truth; and we must avoid error.” — William James · The Will to Believe, and Other Essays in Popular Philosophy
  3. “Truth, crushed to earth, shall rise again;” — William Cullen Bryant · The Battlefield
  4. “It is a mistake always to contemplate the good and ignore the evil” — Helen Keller · Optimism: An Essay
  5. “A hasty judgement is a first step to a recantation.” — Publilius Syrus · The Moral Sayings of Publius Syrus

Earlier sources

Older works represented in the collection, useful for comparing how the topic changes across time.

  1. “We must know the truth; and we must avoid error.” — William James · The Will to Believe, and Other Essays in Popular Philosophy
  2. “And, after all, what is a lie? ’T is but The truth in masquerade;” — Lord Byron · Don Juan — Canto XI
  3. “The Academy should be impartial in conduct; while it aims to exalt the people…” — W. E. B. Du Bois · The Conservation of Races
  4. “Certainly, it is heaven upon earth, to have a man's mind move in charity,…” — Francis Bacon · Of Truth
  5. “Falsehood is so easy, truth so difficult.” — George Eliot · Adam Bede
Browse by length

Choose how much context you want

The complete 157-quote collection includes several reading lengths. Pick a depth, or ignore length and keep browsing normally.

116

Quick scan

Concise quotations for comparing wording and emphasis quickly.

36

More context

Medium-length quotations that give the idea more room to develop.

5

Longer passages

Useful when qualification, narrative setting or a fuller argument matters.

Suggested routeStart with concise lines for range, move to medium-length quotations for more context, and use longer passages when the idea needs fuller development.

157 quotations total. The page loads a smaller initial browse set for speed; search covers the complete collection and Load more continues in collection order.

Key distinctions

Three useful distinctions in this collection

Short quotations can sound more absolute than the larger source argument. These prompts help preserve useful distinctions while browsing truth.

Useful contrasts

  • evidence and honesty versus uncomfortable facts
  • self-deception and clarity versus truth joined with judgment
  • a memorable line versus the fuller argument found in its source context

Where a short line can mislead

Compression can make philosophy sound more certain than the source really is. The meaning notes therefore explain the immediate idea without pretending to summarize an entire philosophy.

These are editorial reading prompts for the topic as a whole, not automatic labels applied to every quotation or inferred only from the initial browse set.

Across time

Where these truth quotations sit historically

Era totals use the complete source-backed topic, not only the quotations loaded in the browse grid.

Source eras

  • Ancient / classical11 quotations
  • Ancient / medieval3 quotations
  • 1500s–1600s27 quotations
  • 1700s21 quotations
  • 1800s56 quotations
  • 1900s and later38 quotations
  • Undated / traditional1 quotation
Compare voices

How different writers approach truth

Each example comes from that writer’s complete source-backed intersection with this topic, not only from the quotations loaded above.

Authors and sources

Who speaks here, and which works are represented?