---
title: "11 Ifs Quotes By Louis Pasteur"
description: "11 Ifs quotes by Louis Pasteur. Plus more from Louis Pasteur and more Ifs sayings from other authors."
image: "https://sms4smile.com/quotes/i/76b/louis-pasteur-3151_country_if-science-has-no-country-the-scientist_259637.png"
---

> [If science has no country, the scientist should have one, and ascribe to it the influence which his works may have in…](https://sms4smile.com/quotes/louis-pasteur/if-science-has-no-country-the-scientist-should-have-one-and-ascribe/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

[Image](https://sms4smile.com/quotes/i/76b/louis-pasteur-3151_country_if-science-has-no-country-the-scientist_259637.png)

> [It would seem to me that I was committing a theft if I were to let one day go by without doing…](https://sms4smile.com/quotes/louis-pasteur/it-would-seem-to-me-that-i-was-committing-a-theft-if-i-were-to-let/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

[Image](https://sms4smile.com/quotes/i/9e5/louis-pasteur-3151_committing_it-would-seem-to-me-that-i-was-committin_1294008.png)

> [If you suppress laboratories, physical science will be stricken with barrenness and death.](https://sms4smile.com/quotes/louis-pasteur/if-you-suppress-laboratories-physical-science-will-be-stricken-with/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

[Image](https://sms4smile.com/quotes/i/35c/louis-pasteur-3151_barrenness_if-you-suppress-laboratories-physical-sc_1435169.png)

> [Where are the real sources of human dignity, freedom and modern democracy, if not in the concept of infinity to which all…](https://sms4smile.com/quotes/louis-pasteur/where-are-the-real-sources-of-human-dignity-freedom-and-modern/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

[Image](https://sms4smile.com/quotes/i/3d4/louis-pasteur-3151_concepts_where-are-the-real-sources-of-human-dign_2397888.png)

> [ If it is a terrifying thought that life is at the mercy of the multiplication of these minute bodies \[microbes\], it is… ](https://sms4smile.com/quotes/louis-pasteur/if-it-is-a-terrifying-thought-that-life-is-at-the-mercy-of-the/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

[Image](https://sms4smile.com/quotes/i/28c/louis-pasteur-3151_accounts_if-it-is-a-terrifying-thought-that-life_616072.png)

> [We affirm the neutrality of Science ... Science is of no country. ... But if Science has no country, the scientist must…](https://sms4smile.com/quotes/louis-pasteur/we-affirm-the-neutrality-of-science-science-is-of-no-country-but-if/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

[Image](https://sms4smile.com/quotes/i/f7c/louis-pasteur-3151_country_we-affirm-the-neutrality-of-science-scie_807418.png)

> [If perchance you should falter during the journey, a hand would be there to support you. If that should be wanting, God,…](https://sms4smile.com/quotes/louis-pasteur/if-perchance-you-should-falter-during-the-journey-a-hand-would-be/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

[Image](https://sms4smile.com/quotes/i/fe0/louis-pasteur-3151_accomplish_if-perchance-you-should-falter-during-th_1242987.png)

> [It is a matter of fact; I approached without a preconceived idea, too ready to declare, if the experiment had imposed upon…](https://sms4smile.com/quotes/louis-pasteur/it-is-a-matter-of-fact-i-approached-without-a-preconceived-idea-too/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

[Image](https://sms4smile.com/quotes/i/5ae/louis-pasteur-3151_blindfolded_it-is-a-matter-of-fact-i-approached-with_1538391.png)

> [Worship the spirit of criticism. If reduced to itself it is not an awakener of ideas or a stimulant to great things,…](https://sms4smile.com/quotes/louis-pasteur/worship-the-spirit-of-criticism-if-reduced-to-itself-it-is-not-an/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

[Image](https://sms4smile.com/quotes/i/b04/louis-pasteur-3151_criticism_worship-the-spirit-of-criticism-if-reduc_2601866.png)

> [Preconceived ideas are like searchlights which illumine the path of the experimenter and serve him as a guide to interrogate nature. They…](https://sms4smile.com/quotes/louis-pasteur/preconceived-ideas-are-like-searchlights-which-illumine-the-path-of/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

[Image](https://sms4smile.com/quotes/i/07c/louis-pasteur-3151_believe_preconceived-ideas-are-like-searchlights_752870.png)

> [The universe is an asymmetrical entity. I am inclined to believe that life as it is manifested to us must be a…](https://sms4smile.com/quotes/louis-pasteur/the-universe-is-an-asymmetrical-entity-i-am-inclined-to-believe-that/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

[Image](https://sms4smile.com/quotes/i/b7d/louis-pasteur-3151_asymmetry_the-universe-is-an-asymmetrical-entity-i_1142118.png)

## Other authors on Ifs

## More by Louis Pasteur

> [There are no such things as applied sciences, only applications of science.](https://sms4smile.com/quotes/louis-pasteur/there-are-no-such-things-as-applied-sciences-only-applications-of/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

> [Nothing is lost and nothing is created in the operations of art as those of nature.](https://sms4smile.com/quotes/louis-pasteur/nothing-is-lost-and-nothing-is-created-in-the-operations-of-art-as/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

> [Whether our efforts are, or not, favored by life, let us be able to say, when we come near to the great goal, I…](https://sms4smile.com/quotes/louis-pasteur/whether-our-efforts-are-or-not-favored-by-life-let-us-be-able-to-say/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

> [Could I but know all, I would have the faith of a Breton peasant woman](https://sms4smile.com/quotes/louis-pasteur/could-i-but-know-all-i-would-have-the-faith-of-a-breton-peasant-woman/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

> [God grant that by my persevering labours I may bring a little stone to the frail and ill-assured edifice of our knowledge of those…](https://sms4smile.com/quotes/louis-pasteur/god-grant-that-by-my-persevering-labours-i-may-bring-a-little-stone/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

> [Posterity will one day laugh at the sublime foolishness of the modern materialistic philosophy. The more I study nature, the more I stand amazed…](https://sms4smile.com/quotes/louis-pasteur/posterity-will-one-day-laugh-at-the-sublime-foolishness-of-the-modern/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

> [Science belongs to no one country.](https://sms4smile.com/quotes/louis-pasteur/science-belongs-to-no-one-country/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

> [Work usually follows will.](https://sms4smile.com/quotes/louis-pasteur/work-usually-follows-will/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

> [If science has no country, the scientist should have one, and ascribe to it the influence which his works may have in this world.](https://sms4smile.com/quotes/louis-pasteur/if-science-has-no-country-the-scientist-should-have-one-and-ascribe/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

> [The universe is asymmetric and I am persuaded that life, as it is known to us, is a direct result of the asymmetry of…](https://sms4smile.com/quotes/louis-pasteur/the-universe-is-asymmetric-and-i-am-persuaded-that-life-as-it-is/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

> [Did you ever observe to whom the accidents happen? Chance favors only the prepared mind.](https://sms4smile.com/quotes/louis-pasteur/did-you-ever-observe-to-whom-the-accidents-happen-chance-favors-only/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

> [Science proceeds by successive answers to questions more and more subtle, coming nearer and nearer to the very essence of phenomena.](https://sms4smile.com/quotes/louis-pasteur/science-proceeds-by-successive-answers-to-questions-more-and-more/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

> [In matters of observation chance favors only the prepared mind. (not literal translation) - Dan's les champs de observation le hasard ne favorise que…](https://sms4smile.com/quotes/louis-pasteur/in-matters-of-observation-chance-favors-only-the-prepared-mind-not/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

> [Time is the best appraiser of scientific work, and I am aware that an industrial discovery rarely produces all its fruit in the hands…](https://sms4smile.com/quotes/louis-pasteur/time-is-the-best-appraiser-of-scientific-work-and-i-am-aware-that-an/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

> [Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world.](https://sms4smile.com/quotes/louis-pasteur/science-knows-no-country-because-knowledge-belongs-to-humanity-and-is/)

[Louis Pasteur](https://sms4smile.com/quotes/author/louis-pasteur/)

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                        "text": "Preconceived ideas are like searchlights which illumine the path of the experimenter and serve him as a guide to interrogate nature.  They become a danger only if he transforms them into fixed ideas-this is why I should like to see these profound words inscribed on the threshold of all the temples of science:  'The greatest derangement of the mind is to believe in something because one wishes it to be so.'",
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                        "text": "The universe is an asymmetrical entity. I am inclined to believe that life as it is manifested to us must be a function of the asymmetry of the universe or of the consequence of this fact. The universe is asymmetrical; for if one placed the entire set of bodies that compose the solar system, each moving in its own way, before a mirror, the image shown would not be superimposable on the reality.",
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