---
title: "17 Doubt Quotes By Charles Darwin"
description: "17 Doubt quotes by Charles Darwin. Plus more from Charles Darwin and more Doubt sayings from other authors."
image: "https://sms4smile.com/quotes/i/564/charles-darwin-507_animal_it-is-scarcely-possible-to-doubt-that-th_3012556.jpg"
---

> [It is scarcely possible to doubt that the love of man has become instinctive in the dog.](https://sms4smile.com/quotes/charles-darwin/it-is-scarcely-possible-to-doubt-that-the-love-of-man-has-become/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/564/charles-darwin-507_animal_it-is-scarcely-possible-to-doubt-that-th_3012556.jpg)

> [It seems to me absurd to doubt that a man may be an ardent Theist and an evolutionist. ... I have never…](https://sms4smile.com/quotes/charles-darwin/it-seems-to-me-absurd-to-doubt-that-a-man-may-be-an-ardent-theist-and/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/835/charles-darwin-507_absurd_it-seems-to-me-absurd-to-doubt-that-a-ma_2936636.jpg)

> [The earthquake, however, must be to every one a most impressive event: the earth, considered from our earliest childhood as the type…](https://sms4smile.com/quotes/charles-darwin/the-earthquake-however-must-be-to-every-one-a-most-impressive-event/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/11f/charles-darwin-507_childhood_the-earthquake-however-must-be-to-every_175499.jpg)

> [I am not very skeptical... a good deal of skepticism in a scientific man is advisable to avoid much loss of time,…](https://sms4smile.com/quotes/charles-darwin/i-am-not-very-skeptical-a-good-deal-of-skepticism-in-a-scientific-man/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/925/charles-darwin-507_advisable_i-am-not-very-skeptical-a-good-deal-of-s_1917289.jpg)

> [ ...one doubts existence of free will \[because\] every action determined by heredity, constitution, example of others or teaching of others." "This view… ](https://sms4smile.com/quotes/charles-darwin/one-doubts-existence-of-free-will-because-every-action-determined-by/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/98c/charles-darwin-507_action_one-doubts-existence-of-free-will-becaus_1622531.jpg)

> [The main conclusion arrived at in this work, namely that man is descended from some lowly-organised form, will, I regret to think,…](https://sms4smile.com/quotes/charles-darwin/the-main-conclusion-arrived-at-in-this-work-namely-that-man-is/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/921/charles-darwin-507_barbarians_the-main-conclusion-arrived-at-in-this-w_3105240.jpg)

> [I often had to run very quickly to be on time, and from being a fleet runner was generally successful; but when…](https://sms4smile.com/quotes/charles-darwin/i-often-had-to-run-very-quickly-to-be-on-time-and-from-being-a-fleet/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/7d2/charles-darwin-507_doubt_i-often-had-to-run-very-quickly-to-be-on_2152987.jpg)

> [I liked the thought of being a country clergyman. Accordingly I read with care Pearson on the Creed and a few other…](https://sms4smile.com/quotes/charles-darwin/i-liked-the-thought-of-being-a-country-clergyman-accordingly-i-read/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/319/charles-darwin-507_accepted_i-liked-the-thought-of-being-a-country-c_258515.jpg)

> [My books have sold largely in England, have been translated into many languages, and passed through several editions in foreign countries. I…](https://sms4smile.com/quotes/charles-darwin/my-books-have-sold-largely-in-england-have-been-translated-into-many/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/7e0/charles-darwin-507_autobiography_my-books-have-sold-largely-in-england-ha_985171.jpg)

> [It has sometimes been said that the success of the Origin proved "that the subject was in the air," or "that men's…](https://sms4smile.com/quotes/charles-darwin/it-has-sometimes-been-said-that-the-success-of-the-origin-proved-that/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/09c/charles-darwin-507_air_it-has-sometimes-been-said-that-the-succ_3031736.jpg)

> [With savages, the weak in body or mind are soon eliminated. We civilized men, on the other hand, do our utmost to…](https://sms4smile.com/quotes/charles-darwin/with-savages-the-weak-in-body-or-mind-are-soon-eliminated-we/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/635/charles-darwin-507_animal_with-savages-the-weak-in-body-or-mind-ar_800167.jpg)

> [I am not very sceptical, — a frame of mind which I believe to be injurious to the progress of science. A…](https://sms4smile.com/quotes/charles-darwin/i-am-not-very-sceptical-a-frame-of-mind-which-i-believe-to-be/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/da1/charles-darwin-507_advisable_i-am-not-very-sceptical-a-frame-of-mind_1352669.jpg)

> [If a person asked my advice, before undertaking a long voyage, my answer would depend upon his possessing a decided taste for…](https://sms4smile.com/quotes/charles-darwin/if-a-person-asked-my-advice-before-undertaking-a-long-voyage-my/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/250/charles-darwin-507_advice_if-a-person-asked-my-advice-before-under_1825947.jpg)

> [At some future period, not very distant as measured by centuries, the civilised races of man will almost certainly exterminate and replace…](https://sms4smile.com/quotes/charles-darwin/at-some-future-period-not-very-distant-as-measured-by-centuries-the-2/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/ed6/charles-darwin-507_apes_at-some-future-period-not-very-distant-a_1758038.jpg)

> [“...Whilst on board the Beagle I was quite orthodox, and I remember being heartily laughed at by several of the officers... for…](https://sms4smile.com/quotes/charles-darwin/whilst-on-board-the-beagle-i-was-quite-orthodox-and-i-remember-being/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/0e6/charles-darwin-507_atheism_whilst-on-board-the-beagle-i-was-quite-o_1180179.jpg)

> [But then with me the horrid doubt always arises whether the convictions of man's mind, which has been developed from the mind…](https://sms4smile.com/quotes/charles-darwin/but-then-with-me-the-horrid-doubt-always-arises-whether-the/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/36b/charles-darwin-507_animal_but-then-with-me-the-horrid-doubt-always_581020.jpg)

> [“But then arises the doubt, can the mind of man, which has, as I fully believe been developed from a mind as…](https://sms4smile.com/quotes/charles-darwin/but-then-arises-the-doubt-can-the-mind-of-man-which-has-as-i-fully/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

[Image](https://sms4smile.com/quotes/i/d23/charles-darwin-507_contradiction_but-then-arises-the-doubt-can-the-mind-o_1146287.jpg)

## Other authors on Doubt

- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b005/author-bertrand-russell-17477.jpg) Bertrand Russell 45 quotes ](https://sms4smile.com/quotes/about/doubt/bertrand-russell/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b005/author-barack-obama-16275.jpg) Barack Obama 33 quotes ](https://sms4smile.com/quotes/about/doubt/barack-obama/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b020/author-richard-p-feynman-78819.jpg) Richard P. Feynman 30 quotes ](https://sms4smile.com/quotes/about/doubt/richard-p-feynman/)
- [Lailah Gifty Akita 30 quotes](https://sms4smile.com/quotes/about/doubt/lailah-gifty-akita/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b010/author-friedrich-nietzsche-36363.jpg) Friedrich Nietzsche 28 quotes ](https://sms4smile.com/quotes/about/doubt/friedrich-nietzsche/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b011/author-henry-david-thoreau-41473.jpg) Henry David Thoreau 24 quotes ](https://sms4smile.com/quotes/about/doubt/henry-david-thoreau/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b024/author-william-shakespeare-95899.jpg) William Shakespeare 23 quotes ](https://sms4smile.com/quotes/about/doubt/william-shakespeare/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b023/author-terry-mark-89514.jpg) Terry Mark 23 quotes ](https://sms4smile.com/quotes/about/doubt/terry-mark/)
- [Mark Twain 23 quotes](https://sms4smile.com/quotes/about/doubt/mark-twain/)
- [Ralph Waldo Emerson 22 quotes](https://sms4smile.com/quotes/about/doubt/ralph-waldo-emerson/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b021/author-rush-limbaugh-81741.jpg) Rush Limbaugh 21 quotes ](https://sms4smile.com/quotes/about/doubt/rush-limbaugh/)
- [Bangambiki Habyarimana 21 quotes](https://sms4smile.com/quotes/about/doubt/bangambiki-habyarimana/)

## More by Charles Darwin

> [The love for all living creatures is the most noble attribute of man.](https://sms4smile.com/quotes/charles-darwin/the-love-for-all-living-creatures-is-the-most-noble-attribute-of-man/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

> [The main conclusion here arrived at ... is that man is descended from some less highly organized form.](https://sms4smile.com/quotes/charles-darwin/the-main-conclusion-here-arrived-at-is-that-man-is-descended-from/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

> [So great is the economy of nature, that most flowers which are fertilised by crepuscular or nocturnal insects emit their odour chiefly or exclusively…](https://sms4smile.com/quotes/charles-darwin/so-great-is-the-economy-of-nature-that-most-flowers-which-are/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

> [I see no good reasons why the views given in this volume should shock the religious views of anyone.](https://sms4smile.com/quotes/charles-darwin/i-see-no-good-reasons-why-the-views-given-in-this-volume-should-shock/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

> [I am quite conscious that my speculations run beyond the bounds of true science…It is a mere rag of an hypothesis with as many…](https://sms4smile.com/quotes/charles-darwin/i-am-quite-conscious-that-my-speculations-run-beyond-the-bounds-of/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

> [If worms have the power of acquiring some notion, however rude, of the shape of an object and over their burrows, as seems the…](https://sms4smile.com/quotes/charles-darwin/if-worms-have-the-power-of-acquiring-some-notion-however-rude-of-the/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

> [We can allow satellites, planets, suns, universe, nay whole systems of universes, to be governed by laws, but the smallest insect, we wish to…](https://sms4smile.com/quotes/charles-darwin/we-can-allow-satellites-planets-suns-universe-nay-whole-systems-of/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

> [Formerly Milton's Paradise Lost had been my chief favourite, and in my excursions during the voyage of the Beagle, when I could take only…](https://sms4smile.com/quotes/charles-darwin/formerly-milton-s-paradise-lost-had-been-my-chief-favourite-and-in-my/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

> [May we not suspect that the vague but very real fears of children, which are quite independent of experience, are the inherited effects of…](https://sms4smile.com/quotes/charles-darwin/may-we-not-suspect-that-the-vague-but-very-real-fears-of-children/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

> [It may be said that natural selection is daily and hourly scrutinizing, throughout the world, every variation, even the slightest; rejecting that which is…](https://sms4smile.com/quotes/charles-darwin/it-may-be-said-that-natural-selection-is-daily-and-hourly/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

> [“Darwin, landing in Brazil in 1832, had a similar reaction, colored by his reading of his predecessor." Humboldt's glorious descriptions are &amp; will for…](https://sms4smile.com/quotes/charles-darwin/darwin-landing-in-brazil-in-1832-had-a-similar-reaction-colored-by/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

> [...all nature is perverse &amp; will not do as I wish it.](https://sms4smile.com/quotes/charles-darwin/all-nature-is-perverse-will-not-do-as-i-wish-it/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

> [“To admit that species generally become rare before they become extinct—to feel no surprise at the comparative rarity of one species with another, and…](https://sms4smile.com/quotes/charles-darwin/to-admit-that-species-generally-become-rare-before-they-become/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

> [To suppose that the eye could have been formed by natural selection, seems, I freely confess, absurd in the highest possible degree](https://sms4smile.com/quotes/charles-darwin/to-suppose-that-the-eye-could-have-been-formed-by-natural-selection/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

> [It is interesting to contemplate an entangled bank clothed with many plants of many kinds with birds singing on the bushes, with various insects…](https://sms4smile.com/quotes/charles-darwin/it-is-interesting-to-contemplate-an-entangled-bank-clothed-with-many/)

[Charles Darwin](https://sms4smile.com/quotes/author/charles-darwin/)

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                        "text": "It seems to me absurd to doubt that a man may be an ardent Theist and an evolutionist. ... I have never been an atheist in the sense of denying the existence of a God.",
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                        "text": "The earthquake, however, must be to every one a most impressive event: the earth, considered from our earliest childhood as the type of solidity, has oscillated like a thin crust beneath our feet; and in seeing the laboured works of man in a moment overthrown, we feel the insignificance of his boasted power.",
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                        "text": "I am not very skeptical... a good deal of skepticism in a scientific man is advisable to avoid much loss of time, but I have met not a few men, who... have often thus been deterred from experiments or observations which would have proven servicable.",
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                        "text": "...one doubts existence of free will [because] every action determined by heredity, constitution, example of others or teaching of others.\" \"This view should teach one profound humility, one deserves no credit for anything...nor ought one to blame others.",
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                        "text": "The main conclusion arrived at in this work, namely that man is descended from some lowly-organised form, will, I regret to think, be highly distasteful to many persons. But there can hardly be a doubt that we are descended from barbarians.",
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                        "text": "I often had to run very quickly to be on time, and from being a fleet runner was generally successful; but when in doubt I prayed earnestly to God to help me, and I well remember that I attributed my success to the prayers and not to my quick running, and marvelled how generally I was aided.",
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                        "text": "I liked the thought of being a country clergyman. Accordingly I read with care Pearson on the Creed and a few other books on divinity; and as I did not then in the least doubt the strict and literal truth of every word in the Bible, I soon persuaded myself that our Creed must be fully accepted.",
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                        "text": "My books have sold largely in England, have been translated into many languages, and passed through several editions in foreign countries. I have heard it said that the success of a work abroad is the best test of its enduring value. I doubt whether this is at all trustworthy; but judged by this standard my name ought to last for a few years.",
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                        "text": "It has sometimes been said that the success of the Origin proved \"that the subject was in the air,\" or \"that men's minds were prepared for it.\" I do not think that this is strictly true, for I occasionally sounded not a few naturalists, and never happened to come across a single one who seemed to doubt about the permanence of species.",
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                        "text": "With savages, the weak in body or mind are soon eliminated. We civilized men, on the other hand, do our utmost to check the process of elimination. We build asylums for the imbecile, the maimed and the sick. Thus the weak members of civilized societies propagate their kind. No one who has attended to the breeding of domestic animals will doubt that this must be highly injurious to the race of man. Hardly anyone is so ignorant as to allow his worst animals to breed.",
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                        "text": "I am not very sceptical, — a frame of mind which I believe to be injurious to the progress of science. A good deal of scepticism in a scientific man is advisable to avoid much loss of time, but I have met with not a few men, who, I feel sure, have often thus been deterred from experiment or observations, which would have proved directly or indirectly serviceable .",
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                        "text": "If a person asked my advice, before undertaking a long voyage, my answer would depend upon his possessing a decided taste for some branch of knowledge, which could by this means be advanced. No doubt it is a high satisfaction to behold various countries and the many races of mankind, but the pleasures gained at the time do not counterbalance the evils.",
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                        "text": "At some future period, not very distant as measured by centuries, the civilised races of man will almost certainly exterminate and replace throughout the world the savage races. At the same time the anthropomorphous apes, as Professor Schaaffhausen has remarked, will no doubt be exterminated. The break will then be rendered wider, for it will intervene between man in a more civilised state as we may hope, than the Caucasian and some ape as low as a baboon, instead of as at present between the negro or Australian and the gorilla.",
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                        "text": "“...Whilst on board the Beagle I was quite orthodox, and I remember being heartily laughed at by several of the officers... for quoting the Bible as an unanswerable authority on some point of morality... But I had gradually come by this time, i.e., 1836 to 1839, to see that the Old Testament from its manifestly false history of the world, with the Tower of Babel, the rainbow at sign, &c., &c., and from its attributing to God the feelings of a revengeful tyrant, was no more to be trusted than the sacred books of the Hindoos, or the beliefs of any barbarian. ...By further reflecting that the clearest evidence would be requisite to make any sane man believe in the miracles by which Christianity is supported, (and that the more we know of the fixed laws of nature the more incredible do miracles become), that the men at that time were ignorant and credulous to a degree almost uncomprehensible by us, that the Gospels cannot be proved to have been written simultaneously with the events, that they differ in many important details, far too important, as it seemed to me, to be admitted as the usual inaccuracies of eyewitnesses; by such reflections as these, which I give not as having the least novelty or value, but as they influenced me, I gradually came to disbelieve in Christianity as a divine revelation. The fact that many false religions have spread over large portions of the earth like wild-fire had some weight with me. Beautiful as is the morality of the New Testament, it can be hardly denied that its perfection depends in part on the interpretation which we now put on metaphors and allegories. But I was very unwilling to give up my belief... Thus disbelief crept over me at a very slow rate, but was at last complete. The rate was so slow that I felt no distress, and have never since doubted even for a single second that my conclusion was correct. I can indeed hardly see how anyone ought to wish Christianity to be true; for if so the plain language of the text seems to show that the men who do not believe, and this would include my Father, Brother and almost all of my friends, will be everlastingly punished. And this is a damnable doctrine.”",
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                        "text": "But then with me the horrid doubt always arises whether the convictions of man's mind, which has been developed from the mind of the lower animals, are of any value or at all trustworthy. Would any one trust in the convictions of a monkey's mind, if there are any convictions in such a mind?",
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                        "text": "“But then arises the doubt, can the mind of man, which has, as I fully believe been developed from a mind as low as that possessed by the lowest animal, be trusted when it draws such grand conclusions?”",
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