---
title: "Meaning & Key Takeaway of: Once doubt begins it spreads rapidly."
description: "\"Once doubt begins it spreads rapidly.\" — John Maynard Keynes"
image: "https://sms4smile.com/quotes/i/67a/john-maynard-keynes-1380_doubt_once-doubt-begins-it-spreads-rapidly-126_1260231.png"
---

#  Once doubt begins it spreads rapidly.

![“Once doubt begins it spreads rapidly.” quote by John Maynard Keynes](https://sms4smile.com/quotes/i/67a/john-maynard-keynes-1380_doubt_once-doubt-begins-it-spreads-rapidly-126_1260231.png)   [Download](https://sms4smile.com/quotes/i/67a/john-maynard-keynes-1380_doubt_once-doubt-begins-it-spreads-rapidly-126_1260231.png) [Open image](https://sms4smile.com/quotes/i/67a/john-maynard-keynes-1380_doubt_once-doubt-begins-it-spreads-rapidly-126_1260231.png)

> “Once doubt begins it spreads rapidly.”

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

## About This Quote

This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.

Doubt spreads quickly, undermining confidence and decision‑making.

**In simple terms:** Doubt expands rapidly.

Key Takeaway

Address doubt early.

Themes

psychoubt confidence psychology

Mood

concerned analytical

Type

motivational philosophical

When to use this quote

- investing
- leadership
- personal development
- health decisions

Key Concepts

cognitive bias behavioral economics

Questions to Reflect On

- What triggers your doubt?
- How can you contain its spread?

A Different Perspective

Doubt can be productive if managed.

★ ★ ★ ★ ★   No ratings yet

[Begins Spreads](https://sms4smile.com/quotes/about/begins-spreads-4003461/) [Doubt](https://sms4smile.com/quotes/about/doubt/) [Doubt Begins](https://sms4smile.com/quotes/about/doubt-begins-4003459/) [Rapidly](https://sms4smile.com/quotes/about/rapidly/) [Spread](https://sms4smile.com/quotes/about/spread/) [Spreads Rapidly](https://sms4smile.com/quotes/about/spreads-rapidly-4003460/)

## Related quotes

> [Doubt begins only at the last frontiers of what is possible.](https://sms4smile.com/quotes/ambrose-bierce/doubt-begins-only-at-the-last-frontiers-of-what-is-possible/)

[Ambrose Bierce](https://sms4smile.com/quotes/author/ambrose-bierce/)

> [Surrounded by a burgeoning human population, Asian elephants have to contend with the spread of settlements and farming, and the demands of rapidly developing…](https://sms4smile.com/quotes/mark-shand/surrounded-by-a-burgeoning-human-population-asian-elephants-have-to/)

[Mark Shand](https://sms4smile.com/quotes/author/mark-shand/)

> [The bottom line here is that I have no doubt that we will control this importation or this case of Ebola so that it…](https://sms4smile.com/quotes/tom-frieden/the-bottom-line-here-is-that-i-have-no-doubt-that-we-will-control/)

[Tom Frieden](https://sms4smile.com/quotes/author/tom-frieden/)

> [I have a generally optimistic temperament and am thrilled by what I see as a rapidly growing food movement, especially among young people who…](https://sms4smile.com/quotes/marion-nestle/i-have-a-generally-optimistic-temperament-and-am-thrilled-by-what-i/)

[Marion Nestle](https://sms4smile.com/quotes/author/marion-nestle/)

> [We were all thrown together on this show very rapidly, there was casting then a few days later a meeting where we all got…](https://sms4smile.com/quotes/steve-kanaly/we-were-all-thrown-together-on-this-show-very-rapidly-there-was/)

[Steve Kanaly](https://sms4smile.com/quotes/author/steve-kanaly/)

> [A novel can be set in motion by an incident, a character, a location, a mood - by anything at all. Sometimes the stimulus…](https://sms4smile.com/quotes/cynthia-ozick/a-novel-can-be-set-in-motion-by-an-incident-a-character-a-location-a/)

[Cynthia Ozick](https://sms4smile.com/quotes/author/cynthia-ozick/)

> [Blitzscaling is what you do when you need to grow really, really quickly. It's the science and art of rapidly building out a company…](https://sms4smile.com/quotes/reid-hoffman/blitzscaling-is-what-you-do-when-you-need-to-grow-really-really/)

[Reid Hoffman](https://sms4smile.com/quotes/author/reid-hoffman/)

> [Nevertheless, the number of farmers, small as well as large, who are adopting the new seeds and new technology is increasing very rapidly, and…](https://sms4smile.com/quotes/norman-borlaug/nevertheless-the-number-of-farmers-small-as-well-as-large-who-are/)

[Norman Borlaug](https://sms4smile.com/quotes/author/norman-borlaug/)

> [Our people are ebbing away like a rapidly receding tide that will never return. The white man's God cannot love our people, or He…](https://sms4smile.com/quotes/chief-seattle/our-people-are-ebbing-away-like-a-rapidly-receding-tide-that-will/)

[Chief Seattle](https://sms4smile.com/quotes/author/chief-seattle/)

> [Co-writing the 'True Blood' comic is a dream come true both as a performer on the show and as longtime comic fan. It's a…](https://sms4smile.com/quotes/michael-mcmillian/co-writing-the-true-blood-comic-is-a-dream-come-true-both-as-a/)

[Michael McMillian](https://sms4smile.com/quotes/author/michael-mcmillian/)

> [The electronics industry expanded rapidly and the seeds for the semiconductor and software revolution were planted. The postwar period also saw the suburbanization of…](https://sms4smile.com/quotes/barry-ritholtz/the-electronics-industry-expanded-rapidly-and-the-seeds-for-the/)

[Barry Ritholtz](https://sms4smile.com/quotes/author/barry-ritholtz/)

> [“Offence is like muddy soil; when trapped underfoot, it resists rapid progress. Don't trap offences under your mind, else you resist change! Jesus said…](https://sms4smile.com/quotes/israelmore-ayivor/offence-is-like-muddy-soil-when-trapped-underfoot-it-resists-rapid/)

[Israelmore Ayivor](https://sms4smile.com/quotes/author/israelmore-ayivor/)

> [I've seen few things more depressing than the end-of-season Giants-Padres series in 2001 in which Barry Bonds hit his 68th homer of the year…](https://sms4smile.com/quotes/stephen-rodrick/i-ve-seen-few-things-more-depressing-than-the-end-of-season-giants/)

[Stephen Rodrick](https://sms4smile.com/quotes/author/stephen-rodrick/)

> [In each business, there is a process, or a delivery system or information system, that is changing rapidly under them.](https://sms4smile.com/quotes/ken-moelis/in-each-business-there-is-a-process-or-a-delivery-system-or/)

[Ken Moelis](https://sms4smile.com/quotes/author/ken-moelis/)

> [Evolution happens in jumps, very rapidly.](https://sms4smile.com/quotes/marilyn-ferguson/evolution-happens-in-jumps-very-rapidly/)

[Marilyn Ferguson](https://sms4smile.com/quotes/author/marilyn-ferguson/)

## More by John Maynard Keynes

> [Once we allow ourselves to be disobedient to the test of an accountant's profit, we have begun to change our civilization.](https://sms4smile.com/quotes/john-maynard-keynes/once-we-allow-ourselves-to-be-disobedient-to-the-test-of-an/)

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

> [If you owe your bank manager a thousand pounds, you are at his mercy. If you owe him a million pounds, he is at…](https://sms4smile.com/quotes/john-maynard-keynes/if-you-owe-your-bank-manager-a-thousand-pounds-you-are-at-his-mercy/)

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

> [There is no subtler, no surer means of overturning the existing basis of society than to debauch the currency.](https://sms4smile.com/quotes/john-maynard-keynes/there-is-no-subtler-no-surer-means-of-overturning-the-existing-basis/)

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

> [It has been pointed out already that no knowledge of probabilities, less in degree than certainty, helps us to know what conclusions are true,…](https://sms4smile.com/quotes/john-maynard-keynes/it-has-been-pointed-out-already-that-no-knowledge-of-probabilities/)

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

> [Everything is always decided for reasons other than the real merits of the case](https://sms4smile.com/quotes/john-maynard-keynes/everything-is-always-decided-for-reasons-other-than-the-real-merits/)

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

> [In the long run we are all dead.](https://sms4smile.com/quotes/john-maynard-keynes/in-the-long-run-we-are-all-dead/)

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

> [The power of vested interests is vastly exaggerated compared with the gradual encroachment of ideas](https://sms4smile.com/quotes/john-maynard-keynes/the-power-of-vested-interests-is-vastly-exaggerated-compared-with-the/)

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

> [It is a good thing to make mistakes so long as you're found out quickly.](https://sms4smile.com/quotes/john-maynard-keynes/it-is-a-good-thing-to-make-mistakes-so-long-as-you-re-found-out/)

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

> [When the accumulation of wealth is no longer of high social importance, there will be great changes in the code of morals. We shall…](https://sms4smile.com/quotes/john-maynard-keynes/when-the-accumulation-of-wealth-is-no-longer-of-high-social/)

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

> [Of the maxims of orthodox finance none, surely, is more anti-social than the fetish of liquidity, the doctrine of that it is a positive…](https://sms4smile.com/quotes/john-maynard-keynes/of-the-maxims-of-orthodox-finance-none-surely-is-more-anti-social/)

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

> [The outstanding faults of the economic society in which we live are its failure to provide for full employment and its arbitrary and inequitable…](https://sms4smile.com/quotes/john-maynard-keynes/the-outstanding-faults-of-the-economic-society-in-which-we-live-are/)

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

> [I conceive, therefore, that a somewhat comprehensive socialisation of investment will prove the means of securing an approximation to full employment.](https://sms4smile.com/quotes/john-maynard-keynes/i-conceive-therefore-that-a-somewhat-comprehensive-socialisation-of/)

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

> [Capitalism is the astounding belief that the most wickedest of men will do the most wickedest of things for the greatest good of everyone.](https://sms4smile.com/quotes/john-maynard-keynes/capitalism-is-the-astounding-belief-that-the-most-wickedest-of-men/)

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

> [Economics is a very dangerous science.](https://sms4smile.com/quotes/john-maynard-keynes/economics-is-a-very-dangerous-science/)

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

> [Whenever you save five shillings you put a man out of work for a day.](https://sms4smile.com/quotes/john-maynard-keynes/whenever-you-save-five-shillings-you-put-a-man-out-of-work-for-a-day/)

[John Maynard Keynes](https://sms4smile.com/quotes/author/john-maynard-keynes/)

[Explore all 246 John Maynard Keynes quotes ](https://sms4smile.com/quotes/author/john-maynard-keynes/)

## More Doubt quotes

> [I put myself in the student's place and remember the frustrations, doubts, determination, and desires I felt when I was going through the initial…](https://sms4smile.com/quotes/ted-martinez/i-put-myself-in-the-student-s-place-and-remember-the-frustrations/)

[Ted Martinez](https://sms4smile.com/quotes/author/ted-martinez/)

> [Because of the womb being a central phenomenon in the feminine body, the whole psychology of woman differs: she is non-aggressive, non-inquiring, non-questioning, non-doubting,…](https://sms4smile.com/quotes/rajneesh/because-of-the-womb-being-a-central-phenomenon-in-the-feminine-body/)

[Rajneesh](https://sms4smile.com/quotes/author/rajneesh/)

> [I don't doubt that straight white men have identity issues and identity complexes and struggle with defining themselves.](https://sms4smile.com/quotes/justin-simien/i-don-t-doubt-that-straight-white-men-have-identity-issues-and/)

[Justin Simien](https://sms4smile.com/quotes/author/justin-simien/)

> [“Where there is doubt (shanka), there is misery. The moment one begins to doubt the knowledge that, 'I am Chandubhai,' misery arises. Once one…](https://sms4smile.com/quotes/dada-bhagwan/where-there-is-doubt-shanka-there-is-misery-the-moment-one-begins-to/)

[Dada Bhagwan](https://sms4smile.com/quotes/author/dada-bhagwan/)

> [We know accurately only when we know little, with knowledge doubt increases.](https://sms4smile.com/quotes/johann-wolfgang-von-goethe/we-know-accurately-only-when-we-know-little-with-knowledge-doubt/)

[Johann Wolfgang von Goethe](https://sms4smile.com/quotes/author/johann-wolfgang-von-goethe/)

> [There is no doubt in my mind and I know in my time, there will be a Canadian basketball player playing for Toronto Raptors, 100%](https://sms4smile.com/quotes/masai-ujiri/there-is-no-doubt-in-my-mind-and-i-know-in-my-time-there-will-be-a/)

[Masai Ujiri](https://sms4smile.com/quotes/author/masai-ujiri/)

> [How could you feel worthless when God has honoured you by creating you and choosing you to be with Him, in this life and…](https://sms4smile.com/quotes/yasmin-mogahed/how-could-you-feel-worthless-when-god-has-honoured-you-by-creating/)

[Yasmin Mogahed](https://sms4smile.com/quotes/author/yasmin-mogahed/)

> [“Let no one hope to find in contemplation an escape from conflict, from anguish or from doubt. On the contrary, the deep, inexpressible certitude…](https://sms4smile.com/quotes/thomas-merton/let-no-one-hope-to-find-in-contemplation-an-escape-from-conflict-from/)

[Thomas Merton](https://sms4smile.com/quotes/author/thomas-merton/)

> [“Two powerful, little words I've learned to use when facing challenges, fears, and doubts— so what? ”](https://sms4smile.com/quotes/richelle-e-goodrich/two-powerful-little-words-i-ve-learned-to-use-when-facing-challenges/)

[Richelle E. Goodrich](https://sms4smile.com/quotes/author/richelle-e-goodrich/)

> [For diplomacy to be effective, words must be credible - and no one can now doubt the word of America.](https://sms4smile.com/quotes/george-w-bush/for-diplomacy-to-be-effective-words-must-be-credible-and-no-one-can/)

[George W. Bush](https://sms4smile.com/quotes/author/george-w-bush/)

> [Vision motivates, sustains and dispels doubt.](https://sms4smile.com/quotes/thomas-young/vision-motivates-sustains-and-dispels-doubt/)

[Thomas Young](https://sms4smile.com/quotes/author/thomas-young/)

> [One may not doubt that, somehow Good Shall come of Water and of Mud; And sure, the reverent eye must see A purpose in…](https://sms4smile.com/quotes/rupert-brooke/one-may-not-doubt-that-somehow-good-shall-come-of-water-and-of-mud/)

[Rupert Brooke](https://sms4smile.com/quotes/author/rupert-brooke/)

> [Let smiles overshadow sadness. Let faith make you believe. Let confidence wash away doubts. Let love complete your life.](https://sms4smile.com/quotes/ritu-ghatourey/let-smiles-overshadow-sadness-let-faith-make-you-believe-let/)

[Ritu Ghatourey](https://sms4smile.com/quotes/author/ritu-ghatourey/)

> [When in doubt, suggest that a subcommittee be appointed.](https://sms4smile.com/quotes/harry-chapman/when-in-doubt-suggest-that-a-subcommittee-be-appointed/)

[Harry Chapman](https://sms4smile.com/quotes/author/harry-chapman/)

> [“Those who contemplate never escape the doubt.”](https://sms4smile.com/quotes/henning-mankell/those-who-contemplate-never-escape-the-doubt/)

[Henning Mankell](https://sms4smile.com/quotes/author/henning-mankell/)

[Browse all 9,582 Doubt quotes ](https://sms4smile.com/quotes/about/doubt/)

```json
{
    "@context": "https://schema.org",
    "@graph": [
        {
            "@type": "Quotation",
            "text": "Once doubt begins it spreads rapidly.",
            "creator": {
                "@type": "Person",
                "name": "John Maynard Keynes"
            },
            "isPartOf": {
                "@id": "https://sms4smile.com/quotes/#website"
            },
            "url": "https://sms4smile.com/quotes/john-maynard-keynes/once-doubt-begins-it-spreads-rapidly/",
            "about": {
                "@type": "Thing",
                "name": "Doubt"
            },
            "@id": "https://sms4smile.com/quotes/john-maynard-keynes/once-doubt-begins-it-spreads-rapidly/#quotation",
            "image": {
                "@type": "ImageObject",
                "@id": "https://sms4smile.com/quotes/i/67a/john-maynard-keynes-1380_doubt_once-doubt-begins-it-spreads-rapidly-126_1260231.png",
                "contentUrl": "https://sms4smile.com/quotes/i/67a/john-maynard-keynes-1380_doubt_once-doubt-begins-it-spreads-rapidly-126_1260231.png",
                "url": "https://sms4smile.com/quotes/i/67a/john-maynard-keynes-1380_doubt_once-doubt-begins-it-spreads-rapidly-126_1260231.png",
                "width": 1080,
                "height": 1080,
                "caption": "“Once doubt begins it spreads rapidly.” — John Maynard Keynes",
                "creditText": "SMS4Smile Quotes",
                "creator": {
                    "@id": "https://sms4smile.com/quotes/#organization"
                }
            }
        },
        {
            "@type": "BreadcrumbList",
            "itemListElement": [
                {
                    "@type": "ListItem",
                    "position": 1,
                    "name": "Home",
                    "item": "https://sms4smile.com/"
                },
                {
                    "@type": "ListItem",
                    "position": 2,
                    "name": "Quotes",
                    "item": "https://sms4smile.com/quotes/"
                },
                {
                    "@type": "ListItem",
                    "position": 3,
                    "name": "John Maynard Keynes",
                    "item": "https://sms4smile.com/quotes/author/john-maynard-keynes/"
                },
                {
                    "@type": "ListItem",
                    "position": 4,
                    "name": "Once doubt begins it spreads rapidly.",
                    "item": "https://sms4smile.com/quotes/john-maynard-keynes/once-doubt-begins-it-spreads-rapidly/"
                }
            ],
            "@id": "https://sms4smile.com/quotes/john-maynard-keynes/once-doubt-begins-it-spreads-rapidly/#breadcrumb"
        },
        {
            "@type": "WebSite",
            "@id": "https://sms4smile.com/quotes/#website",
            "name": "SMS4Smile Quotes",
            "url": "https://sms4smile.com/quotes/",
            "publisher": {
                "@id": "https://sms4smile.com/quotes/#organization"
            }
        },
        {
            "@type": "Organization",
            "@id": "https://sms4smile.com/quotes/#organization",
            "name": "SMS4Smile Quotes",
            "url": "https://sms4smile.com/quotes/",
            "logo": {
                "@type": "ImageObject",
                "url": "https://sms4smile.com/quotes/wp-content/themes/sq/assets/icons/icon-512.png",
                "width": 512,
                "height": 512
            }
        }
    ]
}
```