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Home > Dictionary of Science Quotations > Scientist Names Index H > Robert Heinlein Quotes

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Robert Heinlein
(7 Jul 1907 - 8 May 1988)

American author who is one of the foremost of the science fiction novelists, noted for maintaining plausibility in his treatment of science in his stories.

Science Quotes by Robert Heinlein (42 quotes)

A fake fortuneteller can be tolerated. But an authentic soothsayer should be shot on sight. Cassandra did not get half the kicking around she deserved.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 257.
Science quotes on:  |  Authentic (8)  |  Deserve (65)  |  Fake (3)  |  Half (56)  |  Kick (10)  |  Shoot (19)  |  Sight (132)  |  Soothsayer (4)  |  Tolerate (6)

A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
— Robert Heinlein
In Time Enough for Love: The Lives of Lazarus Long (1973), 265.
Science quotes on:  |  Account (192)  |  Act (272)  |  Alone (311)  |  Analysis (233)  |  Balance (77)  |  Being (1278)  |  Bone (95)  |  Build (204)  |  Building (156)  |  Butcher (9)  |  Change (593)  |  Comfort (59)  |  Computer (127)  |  Cooking (11)  |  Cooperation (32)  |  Death (388)  |  Design (195)  |  Diaper (2)  |  Efficiency (44)  |  Equation (132)  |  Fight (44)  |  Gallant (2)  |  Hog (4)  |  Human (1468)  |  Human Being (175)  |  Insect (77)  |  Invasion (8)  |  Manure (8)  |  Meal (18)  |  New (1216)  |  Order (632)  |  Pitch (17)  |  Plan (117)  |  Problem (676)  |  Program (52)  |  Set (394)  |  Ship (62)  |  Solution (267)  |  Solve (130)  |  Sonnet (4)  |  Specialization (23)  |  Wall (67)  |  Write (230)  |  Writing (189)

A touchstone to determine the actual worth of an “intellectual”—find out how he feels about astrology.
— Robert Heinlein
In Time Enough for Love: The Lives of Lazarus Long (1973), 268.
Science quotes on:  |  Actual (117)  |  Astrology (43)  |  Determination (78)  |  Determine (144)  |  Feel (367)  |  Find (998)  |  Intellectual (255)  |  Touchstone (5)  |  Worth (169)

A zygote is a gamete’s way of producing more gametes. This may be the purpose of the universe.
— Robert Heinlein
In Time Enough for Love: The Lives of Lazarus Long (1973), 262.
Science quotes on:  |  Gamete (5)  |  More (2559)  |  Produce (104)  |  Purpose (317)  |  Universe (857)  |  Way (1217)  |  Zygote (3)

A “critic” is a man who creates nothing and thereby feels qualified to judge the work of creative men. There is logic in this; he is unbiased—he hates all creative people equally.
— Robert Heinlein
In Time Enough for Love: The Lives of Lazarus Long (1973), 365.
Science quotes on:  |  All (4108)  |  Create (235)  |  Creating (7)  |  Creative (137)  |  Creativity (76)  |  Critic (20)  |  Equality (31)  |  Equally (130)  |  Feel (367)  |  Hate (64)  |  Hatred (21)  |  Judge (108)  |  Logic (287)  |  Man (2251)  |  Nothing (966)  |  People (1005)  |  Qualification (14)  |  Qualified (12)  |  Unbiased (7)  |  Work (1351)

A “pacifist male” is a contradiction in terms. Most self-described “pacifists” are not pacific; they simply assume false colors. When the wind changes, they hoist the Jolly Roger.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 258.
Science quotes on:  |  Assume (38)  |  Change (593)  |  Color (137)  |  Contradiction (68)  |  Describe (128)  |  False (100)  |  Male (26)  |  Most (1731)  |  Pacifist (2)  |  Self (267)  |  Term (349)  |  Terms (184)  |  Wind (128)

Always listen to experts.They’ll tell you what can’t be done, and why. Then do it.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 256.
Science quotes on:  |  Can’t (9)  |  Do (1908)  |  Expert (65)  |  Listen (73)  |  Tell (340)  |  Why (491)

Always store beer in a dark place.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 256.
Science quotes on:  |  Beer (10)  |  Dark (140)  |  Place (177)  |  Store (48)

Any priest or shaman must be presumed guilty until proved innocent.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 256.
Science quotes on:  |  Guilty (9)  |  Innocent (12)  |  Must (1526)  |  Presume (9)  |  Priest (28)  |  Prove (250)

Anyone who cannot cope with mathematics is not fully human. At best he is a tolerable subhuman who has learned to wear shoes, bathe and not make messes in the house
— Robert Heinlein
In Time Enough for Love: The Lives of Lazarus Long (1973), 265.
Science quotes on:  |  Best (459)  |  House (140)  |  Human (1468)  |  Learn (629)  |  Learned (235)  |  Mathematics (1328)  |  Shoe (11)  |  Subhuman (2)

But does Man have any “right” to spread through the universe? Man is what he is, a wild animal with the will to survive, and (so far) the ability, against all competition. Unless one accepts that, anything one says about morals, war, politics, you name it, is nonsense. Correct morals arise from knowing what man is, not what do-gooders and well-meaning old Aunt Nellies would like him to be. The Universe will let us know—later—whether or not Man has any “right” to expand through it.
— Robert Heinlein
In Starship Troopers (1959), 186.
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By the data to date, there is only one animal in the Galaxy dangerous to man—man himself. So he must supply his own indispensable competition. He has no enemy to help him.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 256.
Science quotes on:  |  Animal (617)  |  Competition (39)  |  Dangerous (105)  |  Data (156)  |  Date (13)  |  Enemy (82)  |  Galaxy (51)  |  Help (105)  |  Himself (461)  |  Indispensable (28)  |  Man (2251)  |  Must (1526)  |  Supply (93)

Certainly the game is rigged. Don’t let that stop you; if you don’t bet, you can’t win.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 256.
Science quotes on:  |  Bet (12)  |  Can’t (9)  |  Certain (550)  |  Certainly (185)  |  Game (101)  |  Stop (80)  |  Win (52)

Cheops’ Law: Nothing ever gets built on schedule or within budget.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 259. Note: Cheops built the Great Pyramid at Giza. Of course, exceptions do exist, for example, the Empire State Building was built speedily, and under budget.
Science quotes on:  |  Budget (3)  |  Build (204)  |  Cheops (2)  |  Law (894)  |  Nothing (966)  |  Schedule (5)

Delusions are often functional. A mother’s opinions about her children’s beauty, intelligence, goodness, et cetera ad nauseam, keep her from drowning them at birth.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 257.
Science quotes on:  |  Beauty (299)  |  Birth (147)  |  Child (307)  |  Children (200)  |  Delusion (25)  |  Drown (12)  |  Functional (10)  |  Goodness (25)  |  Intelligence (211)  |  Keep (101)  |  Mother (114)  |  Opinion (281)

Everything is theoretically impossible, until it is done. One could write a history of science in reverse by assembling the solemn pronouncements of highest authority about what could not be done and could never happen.
— Robert Heinlein
…...
Science quotes on:  |  Assemble (13)  |  Authority (95)  |  Everything (476)  |  Happen (274)  |  High (362)  |  History (673)  |  History Of Science (63)  |  Impossible (251)  |  Never (1087)  |  Pronouncement (2)  |  Reverse (33)  |  Science (3879)  |  Solemn (20)  |  Theoretically (2)  |  Write (230)

Expertise in one field does not carry over into other fields. But experts often think so. The narrower their field of knowledge the more likely they are to think so.
— Robert Heinlein
In Time Enough for Love: The Lives of Lazarus Long (1973), 367.
Science quotes on:  |  Carry (127)  |  Expert (65)  |  Expertise (8)  |  Field (364)  |  Knowledge (1529)  |  Likelihood (10)  |  More (2559)  |  Narrowness (2)  |  Other (2236)  |  Think (1086)  |  Thinking (414)

Get a shot off fast. This upsets him long enough to let you make your second shot perfect.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 257.
Science quotes on:  |  Enough (340)  |  Fast (45)  |  Long (790)  |  Perfect (216)  |  Second (62)  |  Shoot (19)  |  Upset (18)

If it can’t be expressed in figures, it is not science; it is opinion.
— Robert Heinlein
In Time Enough For Love: the Lives of Lazarus Long (1973), 257.
Science quotes on:  |  Express (186)  |  Figure (160)  |  Measurement (174)  |  Opinion (281)  |  Science (3879)

It has long been known that one horse can run faster than another—but which one? Differences are crucial.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 257.
Science quotes on:  |  Crucial (9)  |  Difference (337)  |  Fast (45)  |  Faster (50)  |  Horse (74)  |  Known (454)  |  Long (790)  |  Run (174)

It is better to copulate than never.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 259.
Science quotes on:  |  Better (486)  |  Never (1087)

It is said that God notes each sparrow that falls. And so He does … because the Sparrow is God. And when a cat stalks a sparrow both of them are God, carrying out God’s thoughts.
— Robert Heinlein
Stranger in a Strange Land. Quoted in Kim Lim (ed.), 1,001 Pearls of Spiritual Wisdom: Words to Enrich, Inspire, and Guide Your Life (2014), 141
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Men are more sentimental than women. It blurs their thinking.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 256.
Science quotes on:  |  Blur (8)  |  More (2559)  |  Sentimental (3)  |  Think (1086)  |  Thinking (414)  |  Woman (151)

Most “scientists” are bottle washers and button sorters.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 257.
Science quotes on:  |  Most (1731)  |  Scientist (820)

Moving parts in rubbing contact require lubrication to avoid excessive wear. Honorifics and formal politeness provide lubrication where people rub together.
— Robert Heinlein
In Time Enough for Love: The Lives of Lazarus Long (1973), 265.
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No storyteller has been able to dream up anything as fantastically unlikely as what really does happen in this mad Universe.
— Robert Heinlein
Time Enough For Love: the Lives of Lazarus Long (1973), 51.
Science quotes on:  |  Dream (208)  |  Happen (274)  |  Mad (53)  |  Universe (857)

Nursing does not diminish the beauty of a woman’s breasts; it enhances their charm by making them look lived in and happy.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 258.
Science quotes on:  |  Beauty (299)  |  Breast (9)  |  Charm (51)  |  Diminish (17)  |  Enhance (16)  |  Happy (105)  |  Live (628)  |  Look (582)  |  Making (300)  |  Nurse (25)  |  Nursing (9)  |  Woman (151)

Of all the strange “crimes” that humanity has legislated out of nothing, “blasphemy” is the most amazing—with “obscenity” and “indecent exposure” fighting it out for second and third place.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 259.
Science quotes on:  |  All (4108)  |  Amazing (35)  |  Blasphemy (7)  |  Crime (38)  |  Exposure (7)  |  Fight (44)  |  Humanity (169)  |  Indecent (2)  |  Most (1731)  |  Nothing (966)  |  Obscenity (3)  |  Place (177)  |  Second (62)  |  Strange (157)  |  Third (15)

One man’s “magic” is another man’s engineering. “Supernatural” is a null word.
— Robert Heinlein
In Time Enough for Love: The Lives of Lazarus Long (1973), 269.
Science quotes on:  |  Engineering (175)  |  Magic (86)  |  Man (2251)  |  Null (2)  |  Supernatural (25)  |  Word (619)

The difference between science and the fuzzy subjects is that science requires reasoning while those other subjects merely require scholarship.
— Robert Heinlein
In Time Enough For Love: the Lives of Lazarus Long (1973), 366.
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The greatest productive force is human selfishness.
— Robert Heinlein
In Time Enough for Love: The Lives of Lazarus Long (1973), 366.
Science quotes on:  |  Force (487)  |  Great (1574)  |  Greatest (328)  |  Human (1468)  |  Productive (32)  |  Productivity (21)  |  Selfishness (8)

The phrase is self-contradictory; “sense” is never “common”.
— Robert Heinlein
In Time Enough for Love: The Lives of Lazarus Long (1973), 47.
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The truth of a proposition has nothing to do with its credibility. And vice versa.
— Robert Heinlein
In Time Enough for Love: The Lives of Lazarus Long (1973), 265.
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There are hidden contradictions in the minds of people who “love Nature” while deploring the “artificialities” with which “Man has spoiled ‘Nature.’” The obvious contradiction lies in their choice of words, which imply that Man and his artifacts are not part of “Nature”—but beavers and their dams are.
— Robert Heinlein
In Time Enough for Love: The Lives of Lazarus Long (1973), 263.
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There is no conclusive evidence of life after death. But there is no evidence of any sort against it. Soon enough you will know. So why fret about it?
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 257.
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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 I assume that there's some reason for that.
— Robert Heinlein
Methuselah's Children, revised (1958). In The Past Through Tomorrow: 'Future History' Stories (1967), 666.
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This Universe never did make sense; I suspect that it was built on government contract.
— Robert Heinlein
The Number of the Beast (1980), 14. In Carl C. Gaither, Physically Speaking (1997), 340.
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Touch is the most fundamental sense. A baby experiences it, all over, before he is born and long before he learns to use sight, hearing, or taste, and no human ever ceases to need it.
— Robert Heinlein
In Time Enough for Love: The Lives of Lazarus Long (1973), 366.
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When an apparent fact runs contrary to logic and common sense, it’s obvious that you have failed to interpret the fact correctly.
— Robert Heinlein
In Orphans of the Sky (1963, 1964), 169.
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You live and learn. Or you don’t live long.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 269.
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Your enemy is never a villain in his own eyes. Keep this in mind; it may offer a way to make him your friend. If not, you can kill him without hate—and quickly.
— Robert Heinlein
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 259.
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“Logic” proved that airplanes can't fly and that H-bombs won't work and that stones don't fall out of the sky. Logic is a way of saying that anything which didn't happen yesterday won't happen tomorrow.
— Robert Heinlein
Glory Road (1963)
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Carl Sagan Thumbnail In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. (1987) -- Carl Sagan
Quotations by:Albert EinsteinIsaac NewtonLord KelvinCharles DarwinSrinivasa RamanujanCarl SaganFlorence NightingaleThomas EdisonAristotleMarie CurieBenjamin FranklinWinston ChurchillGalileo GalileiSigmund FreudRobert BunsenLouis PasteurTheodore RooseveltAbraham LincolnRonald ReaganLeonardo DaVinciMichio KakuKarl PopperJohann GoetheRobert OppenheimerCharles Kettering  ... (more people)

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Paul Feyerabend
- 90 -
Antoine Lavoisier
Lise Meitner
Charles Babbage
Ibn Khaldun
Euclid
Ralph Emerson
Robert Bunsen
Frederick Banting
Andre Ampere
Winston Churchill
- 80 -
John Locke
Bronislaw Malinowski
Bible
Thomas Huxley
Alessandro Volta
Erwin Schrodinger
Wilhelm Roentgen
Louis Pasteur
Bertrand Russell
Jean Lamarck
- 70 -
Samuel Morse
John Wheeler
Nicolaus Copernicus
Robert Fulton
Pierre Laplace
Humphry Davy
Thomas Edison
Lord Kelvin
Theodore Roosevelt
Carolus Linnaeus
- 60 -
Francis Galton
Linus Pauling
Immanuel Kant
Martin Fischer
Robert Boyle
Karl Popper
Paul Dirac
Avicenna
James Watson
William Shakespeare
- 50 -
Stephen Hawking
Niels Bohr
Nikola Tesla
Rachel Carson
Max Planck
Henry Adams
Richard Dawkins
Werner Heisenberg
Alfred Wegener
John Dalton
- 40 -
Pierre Fermat
Edward Wilson
Johannes Kepler
Gustave Eiffel
Giordano Bruno
JJ Thomson
Thomas Kuhn
Leonardo DaVinci
Archimedes
David Hume
- 30 -
Andreas Vesalius
Rudolf Virchow
Richard Feynman
James Hutton
Alexander Fleming
Emile Durkheim
Benjamin Franklin
Robert Oppenheimer
Robert Hooke
Charles Kettering
- 20 -
Carl Sagan
James Maxwell
Marie Curie
Rene Descartes
Francis Crick
Hippocrates
Michael Faraday
Srinivasa Ramanujan
Francis Bacon
Galileo Galilei
- 10 -
Aristotle
John Watson
Rosalind Franklin
Michio Kaku
Isaac Asimov
Charles Darwin
Sigmund Freud
Albert Einstein
Florence Nightingale
Isaac Newton



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