Quotes about doubt

A collection of quotes on the topic of doubt, doing, use, other.

Quotes about doubt

José Baroja photo
José Baroja photo
José Baroja photo
Lil Peep photo
Charles Bukowski photo

“The problem with the world is that the intelligent people are full of doubts while the stupid one are full of confidence.”

Charles Bukowski (1920–1994) American writer

Variant: The problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence.

Shams-i Tabrizi photo
Brian May photo

“When I'm gone, people will no doubt remember me for Queen, but I would much rather be remembered for attempting to change the way we treat our fellow creatures.”

Brian May (1947) English musician and astrophysicist

Interview with The Sunday Times, quoted in "Brian May Converts Estate Into Wildlife Refuge", in Contactmusic.com (9 July 2012) http://www.contactmusic.com/queen/news/brian-may-converts-estate-into-wildlife-refuge_1359933.

Mwanandeke Kindembo photo
Douglas Adams photo

“We demand rigidly defined areas of doubt and uncertainty!”

Source: The Hitchhiker's Guide to the Galaxy

Joachim Peiper photo
Mahavatar Babaji photo

“I only came here to give.
If you come to doubt, I'll give you every reason to doubt. If you come suspicious, I'll give you every reason to be suspicious. But if you come seeking Love, I'll show you more love than you've ever known.”

Mahavatar Babaji Hindu Yogi

Haidakhan Babaji, as quoted in "The legend of Herakhan Baba", by Dio Urmilla Neff in Yoga Journal, No. 32 (May-June 1980), p. 53; Haidakhan Babaji's claims to be Mahavatar Babaji/Hariakhan Baba are disputed by the Self-Realization Fellowship founded by Paramahansa Yogananda.
Disputed

“When truth was revealed to me I never doubted it.”

Nahj al-Balagha

Luiz Inácio Lula da Silva photo

“If there is something which I am proud, in this country, it is that there is no living soul more honest than me. Not even in the Federal Police, not even in the Public Ministry, not even in the Catholic Church, not even in the evangelical church. There may be just as equal, but I doubt it.”

Luiz Inácio Lula da Silva (1945) Brazilian politician, 35th president of Brazil

Testimony to the Federal Police regarding the "Lava-jato Operation" investigation. ‘Não tem uma viva alma mais honesta do que eu’, afirma Lula http://politica.estadao.com.br/blogs/fausto-macedo/nao-tem-uma-viva-alma-mais-honesta-do-que-eu-afirma-lula/ at estadao.com.br 01.20.2016

Mwanandeke Kindembo photo
Anaïs Nin photo
Bertrand Russell photo

“The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.”

Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist

Variant: The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.

Nora Roberts photo
Jim Morrison photo

“Man, I'm sick of doubt.”

Jim Morrison (1943–1971) lead singer of The Doors
Bertrand Russell photo

“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.”

Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist

Often paraphrased as "The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts."
Compare: "One of the painful things about our time is that those who feel certainty are stupid, and those with any imagination and understanding are filled with doubt and indecision." B. Russell, New Hopes for a Changing World (1951). Compare also: "The best lack all conviction, while the worst / Are full of passionate intensity." W. B. Yeats, The Second Coming (1919).
See also: Dunning-Kruger effect, Historical Antecedents https://en.wikipedia.org/wiki/Dunning–Kruger_effect#Historical_antecedents.
1930s, Mortals and Others (1931-35)

Erich Fried photo

“Do not doubt him who tells you he is afraid, but be afraid of him who tells you he has no doubts.”

Erich Fried (1921–1988) Austrian writer

Original German text: "Zweifle nicht an dem der dir sagt er hat Angst, aber hab Angst vor dem der dir sagt, er kennt keinen Zweifel."
from "100 Gedichte ohne Vaterland", pub. 1978.

Cesare Beccaria photo
Khalil Gibran photo
Clandestine Culture photo
Robert Oppenheimer photo

“There must be no barriers to freedom of inquiry … There is no place for dogma in science. The scientist is free, and must be free to ask any question, to doubt any assertion, to seek for any evidence, to correct any errors.”

Robert Oppenheimer (1904–1967) American theoretical physicist and professor of physics

As quoted in "J. Robert Oppenheimer" by L. Barnett, in Life, Vol. 7, No. 9, International Edition (24 October 1949), p. 58; sometimes a partial version (the final sentence) is misattributed to Marcel Proust.
Context: There must be no barriers to freedom of inquiry … There is no place for dogma in science. The scientist is free, and must be free to ask any question, to doubt any assertion, to seek for any evidence, to correct any errors. Our political life is also predicated on openness. We know that the only way to avoid error is to detect it and that the only way to detect it is to be free to inquire. And we know that as long as men are free to ask what they must, free to say what they think, free to think what they will, freedom can never be lost, and science can never regress.

Джефф Фостер photo
Mwanandeke Kindembo photo
Mark Twain photo

“It is better to keep your mouth shut and appear stupid than to open it and remove all doubt.”

Mark Twain (1835–1910) American author and humorist

Cited as an example of "What Mark Twain Didn't Say" in Mark Twain by Geoffrey C. Ward, et al.
Misattributed
Variant: It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt.

Hunter S. Thompson photo
Gabriel García Márquez photo

“A lie is more comfortable than doubt, more useful than love, more lasting than truth.”

Gabriel García Márquez (1927–2014) Colombian writer

[The Autumn of the Patriarch, 2006 [1976], HarperCollins, 978-0-06-088286-0, 254] translated from El Ontoño del Patriarica (1975) by Gregory Rabassa

Vincent Van Gogh photo
Zeno of Citium photo
Simone Weil photo

“Whenever one tries to suppress doubt, there is tyranny.”

Simone Weil (1909–1943) French philosopher, Christian mystic, and social activist

Lectures in philosophy [Leçons de philosophie] (1959) as translated by Hugh Price p. 103

Hasan ibn Ali photo

“The heart that is empty of doubt is the cleanest of hearts.”

Hasan ibn Ali (624–669) Shia Imam

Majlisi, Bihārul Anwār, vol.78, p. 109
General Quotes

The Notorious B.I.G. photo

“Is Brooklyn in the house? Without a doubt, I'm the rapper with clout everybody yap about.”

The Notorious B.I.G. (1972–1997) American rapper

"Get Money Remix"
Song lyrics

Claude Monet photo
Konrad Zuse photo

“The belief in a certain idea gives to the researcher the support for his work. Without this belief he would be lost in a sea of doubts and insufficiently verified proofs.”

Konrad Zuse (1910–1995) German computer scientist and engineer

Der Glaube an eine bestimmte Idee gibt dem Forscher den Rückhalt für seine Arbeit. Ohne diesen Glauben wäre er verloren in einem Meer von Zweifeln und halbgültigen Beweisen.
Attributed in Konrad Zuse http://www.dpma.de/ponline/erfindergalerie/bio_zuse.html on "Die Erfindergalerie", dpma.de, 2008

Romain Rolland photo
Dadabhai Naoroji photo

“Spiritual awakening is not a special feeling, state, or experience. It is not a goal or destination, somewhere to reach in the future. As the Buddha was trying to tell us (though few actually listened), it is not a superhuman achievement or attainment. You don’t have to travel to India to find it. It is not a special state of perfection reserved for the lucky or the privileged few. It is not an exclusive club. It is not an out-of-body experience, and it does not involve living in a cave, shutting off all your beautiful senses, detaching yourself from the realities of this modern world. It cannot be transmitted to you by a fancy bearded (or non-bearded) guru, nor can it be taken away or lost. You do not have to become anyone’s disciple or follower, or give away all your possessions. You do not have to join a cult. You do not have to follow anyone.

Rather, is a constant and ancient invitation – throughout every moment of your life – to trust and embrace yourself exactly as you are, in all your glorious imperfection. It is about being fully present and awake to each precious moment, coming out of the epic movie of past and future (“The Story of Me”) and showing up for life, knowing that even your feelings of non-acceptance are accepted here. It is about radically opening up to this extraordinary gift of existence, embracing both the pain and the joy of it, the bliss and the sorrow, the ecstasy and the overwhelm, the certainty and the doubt. Knowing that you are never separate from the Whole, never broken, never truly lost.”

Jeff Foster (1980) Spiritual teacher

Source: https://www.lifewithoutacentre.com/writings/shockingly-simple-principles-of-spiritual-awakening/

Friedrich Nietzsche photo
Mitski photo

“I wouldn’t say it’s an alter ego, but I have anxiety around social situations, and I don’t like going to parties…As a performer, onstage I know my place. I’m sure of myself. There’s no doubt. It’s just existing, and it’s so lovely to get to be for an hour.”

Mitski (1990) Japanese-American singer-songwriter

Laurel Hell
Source: On how her personal life differs from her onstage persona in Mitski Had to Quit Music to Love It” https://www.rollingstone.com/music/music-features/mitski-new-album-laurel-hell-cover-story-1272973/ in Rolling Stone (2021 Dec 27)

Tennessee Williams photo
William Shakespeare photo

“Doubt thou the stars are fire;
Doubt that the sun doth move;
Doubt truth to be a liar;
But never doubt I love.”

Variant: Doubt thou the stars are fire
Doubt thou the sun doth move
Doubt truth to be a liar
But never doubt I love
Source: Hamlet

Margaret Mead photo

“Never doubt that a small group of thoughtful, committed, citizens can change the world. Indeed, it is the only thing that ever has.”

Margaret Mead (1901–1978) American anthropologist

Source: Kabir, Hajara Muhammad (2010). Northern women development. [Nigeria]. ISBN 978-978-906-469-4. OCLC 890820657 note: 1940s, Male and Female (1949)

Andrei Tarkovsky photo
Zelda Fitzgerald photo
Louisa May Alcott photo
Beryl Markham photo
Francis of Assisi photo

“Lord, make me an instrument of Thy peace.
Where there is hatred, let me sow love;
Where there is injury, pardon;
Where there is doubt, faith;
Where there is despair, hope;
Where there is darkness, light;
Where there is sadness, joy.

O Divine Master,
Grant that I may not so much seek
To be consoled as to console,
To be understood as to understand,
To be loved, as to love;
For it is in giving that we receive;
It is in pardoning that we are pardoned;
It is in dying to self that we are born to Eternal Life.
Amen.”

Francis of Assisi (1182–1226) Catholic saint and founder of the Franciscan Order

Widely known as The Prayer of St. Francis, it is not found in Esser's authoritative collection of Francis's writings.
[Fr. Kajetan, Esser, OFM, ed., Opuscula Sancti Patris Francisci Assisiensis, Rome, Grottaferrata, 1978]. Additionally there is no record of this prayer before the twentieth century.
[Fr. Regis J., Armstrong, OFM, Francis and Clare: The Complete Works, New York, Paulist Press, 1982, 10, 0-8091-2446-7]. Dr. Christian Renoux of the University of Orleans in France traces the origin of the prayer to an anonymous 1912 contributor to La Clochette, a publication of the Holy Mass League in Paris. It was not until 1927 that it was attributed to St. Francis.
The Origin of the Peace Prayer of St. Francis, 2013-06-28, Renoux, Christian http://www.franciscan-archive.org/franciscana/peace.html,.
[Christian, Renoux, La prière pour la paix attribuée à saint François: une énigme à résoudre, Paris, Editions franciscaines, 2001, 2-85020-096-4].
Misattributed

William Shakespeare photo
Robert Browning photo

“I show you doubt, to prove that faith exists.”

Robert Browning (1812–1889) English poet and playwright of the Victorian Era
Henri Poincaré photo

“To doubt everything or to believe everything are two equally convenient solutions; both dispense with the necessity of reflection.”

Douter de tout ou tout croire, ce sont deux solutions également commodes, qui l'une et l'autre nous dispensent de réfléchir.
Preface, Dover abridged edition (1952), p. xxii
Science and Hypothesis (1901)

Emil M. Cioran photo
Michael Jackson photo
Socrates photo
Dante Alighieri photo
Roger Bacon photo
Benjamin Disraeli photo

“There is no doubt a difference in the right hon. gentleman's demeanour as leader of the Opposition and as Minister of the Crown. But that's the old story; you must not contrast too strongly the hours of courtship with the years of possession. 'Tis very true that the right hon. gentleman's conduct is different. I remember him making his protection speeches. They were the best speeches I ever heard. It was a great thing to hear the right hon. gentleman say: "I would rather be the leader of the gentlemen of England than possess the confidence of Sovereigns". That was a grand thing. We don't hear much of "the gentlemen of England" now. But what of that? They have the pleasures of memory—the charms of reminiscence. They were his first love, and, though he may not kneel to them now as in the hour of passion, still they can recall the past; and nothing is more useless or unwise than these scenes of crimination and reproach, for we know that in all these cases, when the beloved object has ceased to charm, it is in vain to appeal to the feelings. You know that this is true. Every man almost has gone through it. My hon. gentleman does what he can to keep them quiet; he sometimes takes refuge in arrogant silence, and sometimes he treats them with haughty frigidity; and if they knew anything of human nature they would take the hint and shut their mouths. But they won't. And what then happens? What happens under all such circumstances? The right hon. gentleman, being compelled to interfere, sends down his valet, who says in the genteelest manner: "We can have no whining here". And that, sir, is exactly the case of the great agricultural interest—that beauty which everybody wooed and one deluded. There is a fatality in such charms, and we now seem to approach the catastrophe of her career. Protection appears to be in about the same condition that Protestantism was in 1828. The country will draw its moral. For my part, if we are to have free trade, I, who honour genius, prefer that such measures should be proposed by the hon. member for Stockport than by one who through skilful Parliamentary manoeuvres has tampered with the generous confidence of a great people and a great party. For myself, I care not what may be the result. Dissolve, if you please, the Parliament you have betrayed. For me there remains this at least—the opportunity of expressing thus publicly my belief that a Conservative Government is an organised hypocrisy.”

Benjamin Disraeli (1804–1881) British Conservative politician, writer, aristocrat and Prime Minister

Speech http://hansard.millbanksystems.com/commons/1845/mar/17/agricultural-interest in the House of Commons (17 March 1845).
1840s

Socrates photo
Al-Maʿarri photo

“A little doubt is better than total credulity.”

Al-Maʿarri (973–1057) Medieval Arab philosopher

As quoted in Leaving Islam: Apostates Speak Out (2003) by Ibn Warraq, p. 68

A. P. J. Abdul Kalam photo
Martin Luther photo

“Of all the fathers, as many as you can name, not one has ever spoken about the sacrament as these fanatics do. None of them uses such an expression as, 'It is simply bread and wine,' or, 'Christ’s body and blood are not present.' Yet since this subject is so frequently discussed by them, it is impossible that they should not at some time have let slip such an expression as, 'It is simply bread,' or, 'Not that the body of Christ is physically present,' or the like, since they are greatly concerned not to mislead the people; actually, they simply proceed to speak as if no one doubted that Christ’s body and blood are present. Certainly among so many fathers and so many writings a negative argument should have turned up at least once, as happens in other articles; but actually they all stand uniformly and consistently on the affirmative side.”

Martin Luther (1483–1546) seminal figure in Protestant Reformation

That These Words of Christ, 'This is My Body' Still Stand Firm Against the Fanatics, 1527, in Luther's Works, Word and Sacrament III, 1961, Fortress Press, , volume 37, p. 54. http://books.google.com/books?ei=PxdBTeK6F4PogQe9lKizAw&ct=result&id=J-0RAQAAIAAJ&dq=%22Nicodemus%2C+joseph%2C+Paul%22&q=%22Still+Stand+Firm+Against+the+Fanatics%22#search_anchor This work appeared in vol. 2 of the Wittenberg ed. of Luther's Works (in German) and was later translated into Latin by Matthew Judex (Matthaeum Iudicem) under the title: Defensio τοῦ ρητοῦ Verborum Cenae: Accipite, Comedite: Hoc est Corpus Meum: Contra Phanaticos Sacramentariorum Spiritus. http://solomon.tcpt.alexanderstreet.com/cgi-bin/asp/philo/cpt/getobject.pl?c.121:1.cpt
Luther's Latin: “Nullus ex patribus, quorum infinitus est numerus, de Sacramento sic loquutus est, ut Sacramentarii. Nam nemo ex iis talibus verbis utitur Tantum panis & vinum est: Vel Corpus & Sanguis Christi non adestProfecto non est credibile, nec possibile cum toties ab iis res ista agatur & repetatur, quod non aliquando, vel semel tantum excidissent haec verba. Est merus Panis, aut, non quod Christi corpus corporaliter adsit, aut his similia, cum tamen multum referat ne homines seducantur, Sed omnes praecise ita loquuntur, quasi nullus dubitet, quin ibi praesto sit corpus & sanguis Christi. Sane ex tot patribus, & tot scriptis, ab aliquibus, vel saltem ab uno potuisset negativa sententia proferri, ut in aliis articulis usitatum & frequens est, si non sensissent, corpus & sanguinem Christi vere inesse. Verum omnes concordes & constantes uno ore affirmatium proferunt.” See Luther's Opera Omnia, Wittenberg ed., (1558), vol., 7, p. 391. http://books.google.com/books?id=jrpjO-K_kQYC&pg=PR10&dq=Accipitae+Hoc+%22corpus+meum%22+luther&hl=en&ei=9iFBTeOqIonbgQeJ4IXmAQ&sa=X&oi=book_result&ct=result&resnum=1&ved=0CCkQ6AEwAA#v=onepage&q=coenae&f=false

Osamu Dazai photo
P. W. Botha photo

“I never have the nagging doubt of wondering whether perhaps I am wrong.”

P. W. Botha (1916–2006) South African prime minister

As quoted in Dictionary of South African Quotations, Jennifer Crwys-Williams, Penguin Books 1994, p. 285

Emil M. Cioran photo
Abraham Lincoln photo

“I leave you, hoping that the lamp of liberty will burn in your bosoms until there shall no longer be a doubt that all men are created free and equal.”

Abraham Lincoln (1809–1865) 16th President of the United States

Speech in reply to Senator Stephen Douglas in the Lincoln-Douglas debates http://www.bartleby.com/251/1003.html of the 1858 campaign for the U.S. Senate, at Chicago, Illinois (10 July 1858)
1850s, Lincoln–Douglas debates (1858)
Context: My friend has said to me that I am a poor hand to quote Scripture. I will try it again, however. It is said in one of the admonitions of our Lord, "As your Father in Heaven is perfect, be ye also perfect." The Saviour, I suppose, did not expect that any human creature could be perfect as the Father in Heaven; but He said, "As your Father in Heaven is perfect, be ye also perfect." He set that up as a standard; and he who did most toward reaching that standard, attained the highest degree of moral perfection. So I say in relation to the principle that all men are created equal, let it be as nearly reached as we can. If we cannot give freedom to every creature, let us do nothing that will impose slavery upon any other creature. Let us then turn this Government back into the channel in which the framers of the Constitution originally placed it. Let us stand firmly by each other. If we do not do so we are turning in the contrary direction, that our friend Judge Douglas proposes — not intentionally — as working in the traces tend to make this one universal slave nation. He is one that runs in that direction, and as such I resist him. My friends, I have detained you about as long as I desired to do, and I have only to say, let us discard all this quibbling about this man and the other man; this race and that race and the other race being inferior, and therefore they must be placed in an inferior position; discarding our standard that we have left us. Let us discard all these things, and unite as one people throughout this land, until we shall once more stand up declaring that all men are created equal. My friends, I could not, without launching off upon some new topic, which would detain you too long, continue to-night. I thank you for this most extensive audience that you have furnished me to-night. I leave you, hoping that the lamp of liberty will burn in your bosoms until there shall no longer be a doubt that all men are created free and equal.

Joseph Goebbels photo
John Ronald Reuel Tolkien photo
Dante Alighieri photo

“O Sun, that healest all distempered vision,
Thou dost content me so, when thou resolvest,
That doubting pleases me no less than knowing!”

Canto XI, lines 91–93 (tr. Longfellow).
The Divine Comedy (c. 1308–1321), Inferno

Dietrich von Choltitz photo
Aleksandr Solzhenitsyn photo

“One artist sees himself as the creator of an independent spiritual world; he hoists onto his shoulders the task of creating this world, of peopling it and of bearing the all-embracing responsibility for it; but he crumples beneath it, for a mortal genius is not capable of bearing such a burden. Just as man in general, having declared himself the centre of existence, has not succeeded in creating a balanced spiritual system. And if misfortune overtakes him, he casts the blame upon the age-long disharmony of the world, upon the complexity of today's ruptured soul, or upon the stupidity of the public.
Another artist, recognizing a higher power above, gladly works as a humble apprentice beneath God's heaven; then, however, his responsbility for everything that is written or drawn, for the souls which perceive his work, is more exacting than ever. But, in return, it is not he who has created this world, not he who directs it, there is no doubt as to its foundations; the artist has merely to be more keenly aware than others of the harmony of the world, of the beauty and ugliness of the human contribution to it, and to communicate this acutely to his fellow-men. And in misfortune, and even at the depths of existence — in destitution, in prison, in sickness — his sense of stable harmony never deserts him.
But all the irrationality of art, its dazzling turns, its unpredictable discoveries, its shattering influence on human beings — they are too full of magic to be exhausted by this artist's vision of the world, by his artistic conception or by the work of his unworthy fingers.”

Aleksandr Solzhenitsyn (1918–2008) Russian writer

Nobel lecture (1970)

Statius photo

“Fear (in times of doubt the worst of prophets) revolves many things.”
Plurima versat, pessimus in dubiis augur, timor.

Source: Thebaid, Book III, Line 5

George Orwell photo

“Although no doubt he was shrewd enough in detecting dishonesty, he seems wherever possible to have believed that other people were acting in good faith and had a better nature through which they could be approached.”

George Orwell (1903–1950) English author and journalist

"Reflections on Gandhi" (1949)
Context: I could see even then that the British officials who spoke of him with a mixture of amusement and disapproval also genuinely liked and admired him, after a fashion. Nobody ever suggested that he was corrupt, or ambitious in any vulgar way, or that anything he did was actuated by fear or malice. In judging a man like Gandhi one seems instinctively to apply high standards, so that some of his virtues have passed almost unnoticed. For instance, it is clear even from the autobiography that his natural physical courage was quite outstanding: the manner of his death was a later illustration of this, for a public man who attached any value to his own skin would have been more adequately guarded. Again, he seems to have been quite free from that maniacal suspiciousness which, as E. M. Forster rightly says in A Passage to India, is the besetting Indian vice, as hypocrisy is the British vice. Although no doubt he was shrewd enough in detecting dishonesty, he seems wherever possible to have believed that other people were acting in good faith and had a better nature through which they could be approached.

Denis Diderot photo

“He does not confound it with probability; he takes for true what is true, for false what is false, for doubtful what is doubtful, and probable what is only probable. He does more, and here you have a great perfection of the philosopher: when he has no reason by which to judge, he knows how to live in suspension of judgment…
The philosophical spirit is, then, a spirit of observation and exactness, which relates everything to true principles…”

Denis Diderot (1713–1784) French Enlightenment philosopher and encyclopædist

Article on Philosophy, Vol. 25, p. 667, as quoted in Main Currents of Western Thought : Readings in Western European Intellectual History from the Middle Ages to the Present (1978) by Franklin Le Van Baumer
Variant translation: Reason is to the philosopher what grace is to the Christian. Grace moves the Christian to act, reason moves the philosopher. Other men walk in darkness; the philosopher, who has the same passions, acts only after reflection; he walks through the night, but it is preceded by a torch. The philosopher forms his principles on an infinity of particular observations. … He does not confuse truth with plausibility; he takes for truth what is true, for forgery what is false, for doubtful what is doubtful, and probable what is probable. … The philosophical spirit is thus a spirit of observation and accuracy.
L'Encyclopédie (1751-1766)
Context: Reason is to the philosopher what grace is to the Christian.
Grace causes the Christian to act, reason the philosopher. Other men are carried away by their passions, their actions not being preceded by reflection: these are the men who walk in darkness. On the other hand, the philosopher, even in his passions, acts only after reflection; he walks in the dark, but by a torch.
The philosopher forms his principles from an infinity of particular observations. Most people adopt principles without thinking of the observations that have produced them, they believe the maxims exist, so to speak, by themselves. But the philosopher takes maxims from their source; he examines their origin; he knows their proper value, and he makes use of them only in so far as they suit him.
Truth is not for the philosopher a mistress who corrupts his imagination and whom he believes to be found everywhere; he contents himself with being able to unravel it where he can perceive it. He does not confound it with probability; he takes for true what is true, for false what is false, for doubtful what is doubtful, and probable what is only probable. He does more, and here you have a great perfection of the philosopher: when he has no reason by which to judge, he knows how to live in suspension of judgment...
The philosophical spirit is, then, a spirit of observation and exactness, which relates everything to true principles...

Richard Feynman photo

“Our freedom to doubt was born out of a struggle against authority in the early days of science. It was a very deep and strong struggle: permit us to question — to doubt — to not be sure. I think that it is important that we do not forget this struggle and thus perhaps lose what we have gained.”

Richard Feynman (1918–1988) American theoretical physicist

The Value of Science (1955)
Context: The scientist has a lot of experience with ignorance and doubt and uncertainty, and this experience is of very great importance, I think. When a scientist doesn’t know the answer to a problem, he is ignorant. When he has a hunch as to what the result is, he is uncertain. And when he is pretty darn sure of what the result is going to be, he is still in some doubt. We have found it of paramount importance that in order to progress we must recognize our ignorance and leave room for doubt. Scientific knowledge is a body of statements of varying degrees of certainty — some most unsure, some nearly sure, but none absolutely certain. Now, we scientists are used to this, and we take it for granted that it is perfectly consistent to be unsure, that it is possible to live and not know. But I don’t know whether everyone realizes this is true. Our freedom to doubt was born out of a struggle against authority in the early days of science. It was a very deep and strong struggle: permit us to question — to doubt — to not be sure. I think that it is important that we do not forget this struggle and thus perhaps lose what we have gained.

Desiderius Erasmus photo

“I doubt if a single individual could be found from the whole of mankind free from some form of insanity. The only difference is one of degree.”

Desiderius Erasmus (1466–1536) Dutch Renaissance humanist, Catholic priest, and theologian

As quoted in Words from the Wise : Over 6,000 of the Smartest Things Ever Said (2007) by Rosemarie Jarski, p. 312
Context: I doubt if a single individual could be found from the whole of mankind free from some form of insanity. The only difference is one of degree. A man who sees a gourd and takes it for his wife is called insane because this happens to very few people.

Alfred Freddy Krupa photo
Benjamin Franklin photo

“When in doubt, don't.”

Benjamin Franklin (1706–1790) American author, printer, political theorist, politician, postmaster, scientist, inventor, civic activist, …
Mwanandeke Kindembo photo
Aleksandr Solzhenitsyn photo
This quote waiting for review.
José Baroja photo

“Beware of nuns and priests, they will make you doubt your faith.”

José Baroja (1983) Chilean author and editor

Source: Radiorama de Occidente. 1480 AM. Guadalajara, Mexico.

Joyce Carol Oates photo

“The ideal art, the noblest of art: working with the complexities of life, refusing to simplify, to "overcome" doubt.”

Joyce Carol Oates (1938) American author

Source: The Journal of Joyce Carol Oates: 1973-1982

John Steinbeck photo
Walt Whitman photo
Bertrand Russell photo