---
title: "24 Science Quotes By Robert A. Heinlein"
description: "24 Science quotes by Robert A. Heinlein. Plus more from Robert A. Heinlein and more Science sayings from other authors."
image: "https://sms4smile.com/quotes/i/af3/robert-a-heinlein-209_bottles_most-scientists-are-bottle-washers-and-b_787581.jpg"
---

> [Most 'scientists' are bottle washers and button sorters.](https://sms4smile.com/quotes/robert-a-heinlein/most-scientists-are-bottle-washers-and-button-sorters/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/af3/robert-a-heinlein-209_bottles_most-scientists-are-bottle-washers-and-b_787581.jpg)

> [“Allie, what do the Stars tell me to do? You know I don't understand the scientific part.”](https://sms4smile.com/quotes/robert-a-heinlein/allie-what-do-the-stars-tell-me-to-do-you-know-i-don-t-understand-the/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/e87/robert-a-heinlein-209_science_allie-what-do-the-stars-tell-me-to-do-yo_1767531.jpg)

> [Magic is not science, it is a collection of ways to do things ways that work but often we don't know why.](https://sms4smile.com/quotes/robert-a-heinlein/magic-is-not-science-it-is-a-collection-of-ways-to-do-things-ways/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/cb0/robert-a-heinlein-209_collections_magic-is-not-science-it-is-a-collection_169053.jpg)

> [A touchstone to determine the actual worth of an "intellectual" - find out how he feels about astrology.](https://sms4smile.com/quotes/robert-a-heinlein/a-touchstone-to-determine-the-actual-worth-of-an-intellectual-find/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/cfe/robert-a-heinlein-209_astrology_a-touchstone-to-determine-the-actual-wor_235008.jpg)

> [The truth of a proposition has nothing to do with its credibility. And vice versa.](https://sms4smile.com/quotes/robert-a-heinlein/the-truth-of-a-proposition-has-nothing-to-do-with-its-credibility-and/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/210/robert-a-heinlein-209_credibility_the-truth-of-a-proposition-has-nothing-t_936742.jpg)

> [One could write a history of science in reverse by assembling the solemn pronouncements of highest authority about what could not be…](https://sms4smile.com/quotes/robert-a-heinlein/one-could-write-a-history-of-science-in-reverse-by-assembling-the/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/a07/robert-a-heinlein-209_authority_one-could-write-a-history-of-science-in_2800622.jpg)

> [If it can't be expressed in figures, it is not science; it is opinion. It has long been known that one horse…](https://sms4smile.com/quotes/robert-a-heinlein/if-it-can-t-be-expressed-in-figures-it-is-not-science-it-is-opinion/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/fa2/robert-a-heinlein-209_crucial_if-it-can-t-be-expressed-in-figures-it-i_3059018.jpg)

> [I think that science fiction has a distinct therapeutic value because all of it has as its primary postulate that the world…](https://sms4smile.com/quotes/robert-a-heinlein/i-think-that-science-fiction-has-a-distinct-therapeutic-value-because/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/94e/robert-a-heinlein-209_doe_i-think-that-science-fiction-has-a-disti_2964467.jpg)

> [In this complex world, the scientific method, and the consequences of the scientific method are central to everything the human race is…](https://sms4smile.com/quotes/robert-a-heinlein/in-this-complex-world-the-scientific-method-and-the-consequences-of/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/6f7/robert-a-heinlein-209_complexes_in-this-complex-world-the-scientific-met_2714882.jpg)

> [If we blow ourselves up we will do it by misapplication of science; if we manage to keep from blowing ourselves up,…](https://sms4smile.com/quotes/robert-a-heinlein/if-we-blow-ourselves-up-we-will-do-it-by-misapplication-of-science-if/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/f30/robert-a-heinlein-209_application_if-we-blow-ourselves-up-we-will-do-it-by_9710.jpg)

> [Why don't they make more science fiction movies? The answer to any question starting, Why don't they- is almost always, Money.](https://sms4smile.com/quotes/robert-a-heinlein/why-don-t-they-make-more-science-fiction-movies-the-answer-to-any/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/ac5/robert-a-heinlein-209_answers_why-don-t-they-make-more-science-fiction_2388627.jpg)

> [...revolutions are not won by enlisting the masses. Revolution is a science for the few who are competent to practice it. It…](https://sms4smile.com/quotes/robert-a-heinlein/revolutions-are-not-won-by-enlisting-the-masses-revolution-is-a/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/a43/robert-a-heinlein-209_communication_revolutions-are-not-won-by-enlisting-the_1055593.jpg)

> [There ought not to be anything in the whole universe that man can't poke his nose into-that's the way we're built and…](https://sms4smile.com/quotes/robert-a-heinlein/there-ought-not-to-be-anything-in-the-whole-universe-that-man-can-t/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/9e4/robert-a-heinlein-209_assuming_there-ought-not-to-be-anything-in-the-wh_1370653.jpg)

> [Touch is the most fundamental sense. A baby experiences it, all over, before he is born and long before he learns to…](https://sms4smile.com/quotes/robert-a-heinlein/touch-is-the-most-fundamental-sense-a-baby-experiences-it-all-over/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/9dd/robert-a-heinlein-209_baby_touch-is-the-most-fundamental-sense-a-ba_131320.jpg)

> [“An apostate scientist, a kidnapped scientist, a dull peasant, a two-headed monster, an apple-brained moron -- five knives, counting Joe-Jim as one;…](https://sms4smile.com/quotes/robert-a-heinlein/an-apostate-scientist-a-kidnapped-scientist-a-dull-peasant-a-two/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/f4b/robert-a-heinlein-209_heinlein_an-apostate-scientist-a-kidnapped-scient_2978813.jpg)

> [The future is better than the past. Despite the crepe hangers, romanticists, and anti-intellectuals, the world steadily grows better because the human…](https://sms4smile.com/quotes/robert-a-heinlein/the-future-is-better-than-the-past-despite-the-crepe-hangers/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/e45/robert-a-heinlein-209_crepes_the-future-is-better-than-the-past-despi_2066898.jpg)

> [A handy short definition of almost all science fiction might read: realistic speculation about possible future events, based solidly on adequate knowledge…](https://sms4smile.com/quotes/robert-a-heinlein/a-handy-short-definition-of-almost-all-science-fiction-might-read/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/156/robert-a-heinlein-209_adequate_a-handy-short-definition-of-almost-all-s_1361135.jpg)

> [There are two ways of forming an opinion. One is the scientific method; the other, the scholastic. To the scientific mind, experimental…](https://sms4smile.com/quotes/robert-a-heinlein/there-are-two-ways-of-forming-an-opinion-one-is-the-scientific-method/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/b9c/robert-a-heinlein-209_academic_there-are-two-ways-of-forming-an-opinion_1021871.jpg)

> [A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building,…](https://sms4smile.com/quotes/robert-a-heinlein/a-human-being-should-be-able-to-change-a-diaper-plan-an-invasion/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/52c/robert-a-heinlein-209_able_a-human-being-should-be-able-to-change-a_403429.jpg)

> [“Both for practical reasons and for mathematically verifiable moral reasons, authority and responsibility must be equal - else a balancing takes place…](https://sms4smile.com/quotes/robert-a-heinlein/both-for-practical-reasons-and-for-mathematically-verifiable-moral/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/3f3/robert-a-heinlein-209_democracy_both-for-practical-reasons-and-for-mathe_2208156.jpg)

> [“The most difficult speculation for a science fiction writer to undertake is to imagine correctly the \*secondary\* implications of a new factor.…](https://sms4smile.com/quotes/robert-a-heinlein/the-most-difficult-speculation-for-a-science-fiction-writer-to/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/71a/robert-a-heinlein-209_ahead-of-time_the-most-difficult-speculation-for-a-sci_2806030.jpg)

> [The difference between science and the fuzzy subjects is that science requires reasoning while those other subjects merely require scholarship.](https://sms4smile.com/quotes/robert-a-heinlein/the-difference-between-science-and-the-fuzzy-subjects-is-that-science/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/221/robert-a-heinlein-209_fuzzy_the-difference-between-science-and-the-f_628637.jpg)

> [“Everything is theoretically impossible, until it is done. One could write a history of science in reverse by assembling the solemn pronouncements…](https://sms4smile.com/quotes/robert-a-heinlein/everything-is-theoretically-impossible-until-it-is-done-one-could/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/f56/robert-a-heinlein-209_doubters_everything-is-theoretically-impossible-u_732032.jpg)

> [No storyteller has been able to dream up anything as fantastically unlikely as what really does happen in this mad Universe.](https://sms4smile.com/quotes/robert-a-heinlein/no-storyteller-has-been-able-to-dream-up-anything-as-fantastically/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

[Image](https://sms4smile.com/quotes/i/ff4/robert-a-heinlein-209_able_no-storyteller-has-been-able-to-dream-up_2115121.jpg)

## Other authors on Science

- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b003/author-albert-einstein-10494.jpg) Albert Einstein 320 quotes ](https://sms4smile.com/quotes/about/science/albert-einstein/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b018/author-neil-degrasse-tyson-70683.jpg) Neil deGrasse Tyson 277 quotes ](https://sms4smile.com/quotes/about/science/neil-degrasse-tyson/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b006/author-carl-sagan-20994.jpg) Carl Sagan 268 quotes ](https://sms4smile.com/quotes/about/science/carl-sagan/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b020/author-richard-dawkins-78503.jpg) Richard Dawkins 181 quotes ](https://sms4smile.com/quotes/about/science/richard-dawkins/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b020/author-richard-p-feynman-78819.jpg) Richard P. Feynman 135 quotes ](https://sms4smile.com/quotes/about/science/richard-p-feynman/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b005/author-bertrand-russell-17477.jpg) Bertrand Russell 118 quotes ](https://sms4smile.com/quotes/about/science/bertrand-russell/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b022/author-stephen-hawking-87021.jpg) Stephen Hawking 104 quotes ](https://sms4smile.com/quotes/about/science/stephen-hawking/)
- [Ralph Waldo Emerson 102 quotes](https://sms4smile.com/quotes/about/science/ralph-waldo-emerson/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b022/author-stephen-jay-gould-87041.jpg) Stephen Jay Gould 90 quotes ](https://sms4smile.com/quotes/about/science/stephen-jay-gould/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b012/author-isaac-asimov-44668.jpg) Isaac Asimov 89 quotes ](https://sms4smile.com/quotes/about/science/isaac-asimov/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b006/author-charles-darwin-22208.jpg) Charles Darwin 89 quotes ](https://sms4smile.com/quotes/about/science/charles-darwin/)
- [ ![](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b010/author-frederick-lenz-36205.jpg) Frederick Lenz 87 quotes ](https://sms4smile.com/quotes/about/science/frederick-lenz/)

## More by Robert A. Heinlein

> [Social responsibility above the level of family, or at most of tribe, requires imagination-- devotion, loyalty, all the higher virtues -- which a man…](https://sms4smile.com/quotes/robert-a-heinlein/social-responsibility-above-the-level-of-family-or-at-most-of-tribe/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

> [My folks tried to make a preacher of me and missed by a narrow margin… I would have made a good one if I…](https://sms4smile.com/quotes/robert-a-heinlein/my-folks-tried-to-make-a-preacher-of-me-and-missed-by-a-narrow-margin/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

> [Ninety percent of all human wisdom is the ability to mind your own business.](https://sms4smile.com/quotes/robert-a-heinlein/ninety-percent-of-all-human-wisdom-is-the-ability-to-mind-your-own/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

> [If we blow ourselves up we will do it by misapplication of science; if we manage to keep from blowing ourselves up, it will…](https://sms4smile.com/quotes/robert-a-heinlein/if-we-blow-ourselves-up-we-will-do-it-by-misapplication-of-science-if/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

> [Nor would anybody suspect. If was one thing all people took for granted, was conviction that if you feed honest figures into a computer,…](https://sms4smile.com/quotes/robert-a-heinlein/nor-would-anybody-suspect-if-was-one-thing-all-people-took-for/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

> [Women will forgive anything. Otherwise, the race would have died out long ago.](https://sms4smile.com/quotes/robert-a-heinlein/women-will-forgive-anything-otherwise-the-race-would-have-died-out/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

> [Most neuroses and some psychoses can be traced to the unnecessary and unhealthy habit of daily wallowing in the troubles and sins of five…](https://sms4smile.com/quotes/robert-a-heinlein/most-neuroses-and-some-psychoses-can-be-traced-to-the-unnecessary-and/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

> [No statement should be believed because it is made by an authority.](https://sms4smile.com/quotes/robert-a-heinlein/no-statement-should-be-believed-because-it-is-made-by-an-authority/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

> [“Some people are ants by nature; they have to work, even when it’s useless. Few people have a talent for constructive laziness.”](https://sms4smile.com/quotes/robert-a-heinlein/some-people-are-ants-by-nature-they-have-to-work-even-when-it-s/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

> [“The instinct to survive is human nature itself, and every aspect of our personalities derives from it. Anything that conflicts with the survival instinct…](https://sms4smile.com/quotes/robert-a-heinlein/the-instinct-to-survive-is-human-nature-itself-and-every-aspect-of/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

> [“I tried to dig out of the computer a call directory for Luna. But it was still sulking. I could not get it to…](https://sms4smile.com/quotes/robert-a-heinlein/i-tried-to-dig-out-of-the-computer-a-call-directory-for-luna-but-it/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

> [“this has more aspects than a cat has hair.”](https://sms4smile.com/quotes/robert-a-heinlein/this-has-more-aspects-than-a-cat-has-hair/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

> [Never own more than you can carry in both hands at a dead run.](https://sms4smile.com/quotes/robert-a-heinlein/never-own-more-than-you-can-carry-in-both-hands-at-a-dead-run/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

> [“In Wilson's scale of evaluations breakfast rated just after life itself and ahead of the chance of immortality." ~ By His Bootstraps / Robert A. Heinlein”](https://sms4smile.com/quotes/robert-a-heinlein/in-wilson-s-scale-of-evaluations-breakfast-rated-just-after-life/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

> [Ignorance is curable, stupid is forever.](https://sms4smile.com/quotes/robert-a-heinlein/ignorance-is-curable-stupid-is-forever/)

[Robert A. Heinlein](https://sms4smile.com/quotes/author/robert-a-heinlein/)

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                        "text": "...revolutions are not won by enlisting the masses. Revolution is a science for the few who are competent to practice it. It depends on correct organisation and above all, on communications.",
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                        "text": "The future is better than the past. Despite the crepe hangers, romanticists, and anti-intellectuals, the world steadily grows better because the human mind, applying itself to environment, makes it better. With hands ... with tools ... with horse sense and science and engineering.",
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