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Who said: “As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality.”
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Home > Dictionary of Science Quotations > Scientist Names Index K > Helen Keller Quotes

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Helen Keller
(27 Jun 1880 - 1 Jun 1968)

American author and social activist who was the first deaf-blind person to graduate from an American college.

Science Quotes by Helen Keller (18 quotes)

Be of good cheer. Do not think of today’s failures, but of the success that may come tomorrow. You have set yourself a difficult task, but you will succeed if you persevere; and you will find a joy in overcoming obstacles.
— Helen Keller
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Science quotes on:  |  Cheer (7)  |  Difficult (247)  |  Do (1908)  |  Failure (161)  |  Find (999)  |  Good (889)  |  Joy (107)  |  Obstacle (42)  |  Overcome (39)  |  Persevere (5)  |  Set (394)  |  Succeed (109)  |  Success (303)  |  Task (147)  |  Think (1086)  |  Today (314)  |  Tomorrow (60)  |  Will (2354)

Character cannot be developed in ease and quiet. Only through experience of trial and suffering can the soul be strengthened, ambition inspired, and success achieved.
— Helen Keller
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Science quotes on:  |  Achieve (67)  |  Ambition (44)  |  Character (243)  |  Develop (268)  |  Ease (35)  |  Experience (470)  |  Inspire (52)  |  Quiet (36)  |  Soul (227)  |  Strengthen (23)  |  Success (303)  |  Suffer (41)  |  Suffering (67)  |  Through (849)  |  Trial (57)

I am sure the daisies and buttercups have as little use for the science of Geometry as I, in spite of the fact that they so beautifully illustrate its principles.
— Helen Keller
In Letter (7 Jun 1898), at age almost 18, to Charles Dudley Hutton, excerpted in The Story of My Life: With her Letters (1887-1901) (1903, 1921), 243.
Science quotes on:  |  Beautiful (259)  |  Daisy (4)  |  Fact (1212)  |  Geometry (259)  |  Illustrate (10)  |  Little (708)  |  Principle (510)  |  Science (3880)  |  Spite (55)  |  Use (766)

It is a terrible thing to see and have no vision.
— Helen Keller
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Science quotes on:  |  See (1082)  |  Terrible (38)  |  Thing (1915)  |  Vision (122)

Keep your face to the sunshine and you cannot see the shadow.
— Helen Keller
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Science quotes on:  |  Face (212)  |  Keep (101)  |  See (1082)  |  Shadow (72)  |  Sunshine (10)

Life is either a daring adventure or nothing.
— Helen Keller
Quoted in Kim Lim (ed.), 1,001 Pearls of Spiritual Wisdom: Words to Enrich, Inspire, and Guide Your Life (2014), 21
Science quotes on:  |  Adventure (56)  |  Dare (50)  |  Daring (17)  |  Life (1799)  |  Nothing (969)

No pessimist ever discovered the secret of the stars or sailed an uncharted land, or opened a new doorway for the human spirit.
— Helen Keller
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Science quotes on:  |  Discover (553)  |  Doorway (2)  |  Human (1470)  |  Human Spirit (12)  |  Land (115)  |  New (1217)  |  Open (274)  |  Pessimist (7)  |  Sail (36)  |  Secret (195)  |  Spirit (265)  |  Star (430)  |  Stars (304)  |  Uncharted (10)

Now I feel as if I should succeed in doing something in mathematics, although I cannot see why it is so very important… The knowledge doesn’t make life any sweeter or happier, does it?
— Helen Keller
In Letter (29 May 1898), at age almost 18, to Mrs. Lawrence Hutton, excerpted in The Story of My Life: With her Letters (1887-1901) (1903, 1921), 242.
Science quotes on:  |  Doing (280)  |  Feel (366)  |  Happy (105)  |  Important (210)  |  Knowledge (1536)  |  Life (1799)  |  Mathematics (1333)  |  See (1082)  |  Something (719)  |  Succeed (109)  |  Sweet (39)  |  Why (491)

One can never consent to creep when one feels an impulse to soar.
— Helen Keller
The Story of My Life (1921), 393.
Science quotes on:  |  Consent (14)  |  Creep (15)  |  Feel (366)  |  Impulse (48)  |  Motivation (27)  |  Never (1087)  |  Soar (23)

One cannot consent to creep when one has an impulse to soar.
— Helen Keller
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Science quotes on:  |  Consent (14)  |  Creep (15)  |  Impulse (48)  |  Soar (23)

Optimism is the faith that leads to achievement. Nothing can be done without hope or confidence.
— Helen Keller
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Science quotes on:  |  Achievement (180)  |  Confidence (68)  |  Faith (203)  |  Hope (299)  |  Lead (385)  |  Nothing (969)  |  Optimism (14)

Science may have found a cure for most evils; but it has found no remedy for the worst of them all—the apathy of human beings.
— Helen Keller
In My Religion (2007), 162.
Science quotes on:  |  All (4107)  |  Apathy (3)  |  Being (1278)  |  Cure (122)  |  Evil (116)  |  Human (1470)  |  Human Being (176)  |  Human Beings (117)  |  Most (1729)  |  Remedy (62)  |  Science (3880)  |  Worst (57)

The best and most beautiful things in the world cannot be seen or even touched. They must be felt with the heart.
— Helen Keller
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Science quotes on:  |  Beautiful (259)  |  Best (459)  |  Feel (366)  |  Heart (230)  |  Most (1729)  |  Must (1526)  |  See (1082)  |  Thing (1915)  |  Touch (142)  |  World (1778)

The highest result of education is tolerance.
— Helen Keller
In Optimism: An Essay (1903), 40.
Science quotes on:  |  Education (379)  |  High (363)  |  Result (678)  |  Tolerance (10)

The most pathetic person in the world is someone who has sight, but has no vision.
— Helen Keller
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Science quotes on:  |  Most (1729)  |  Pathetic (4)  |  Person (363)  |  Sight (132)  |  Someone (22)  |  Vision (122)  |  World (1778)

When one door of happiness closes, another opens; but often we look so long at the closed door that we do not see the one which has been opened for us.
— Helen Keller
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Science quotes on:  |  Close (69)  |  Closed (38)  |  Do (1908)  |  Door (93)  |  Happiness (116)  |  Long (789)  |  Look (582)  |  Often (106)  |  Open (274)  |  See (1082)

When we learn a new word, it is the key to untold treasures.
— Helen Keller
In Letter (29 May 1898), at age almost 18, to Mrs. Lawrence Hutton, excerpted in The Story of My Life: With her Letters (1887-1901) (1903, 1921), 242.
Science quotes on:  |  Key (50)  |  Learn (632)  |  Linguistics (31)  |  New (1217)  |  Treasure (57)  |  Untold (6)  |  Word (622)

Why is it so very important to know that the lines drawn from the extremities of the base of an isosceles triangle to the middle points of the opposite sides are equal!
— Helen Keller
In Letter (29 May 1898), at age almost 18, to Mrs. Lawrence Hutton, excerpted in The Story of My Life: With her Letters (1887-1901) (1903, 1921), 242.
Science quotes on:  |  Base (117)  |  Draw (137)  |  Equal (84)  |  Extremity (7)  |  Geometry (259)  |  Important (210)  |  Isosceles Triangle (3)  |  Know (1519)  |  Line (91)  |  Middle (16)  |  Opposite (104)  |  Point (580)  |  Side (232)  |  Triangle (19)  |  Why (491)


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 Einstein • Isaac Newton • Lord Kelvin • Charles Darwin • Srinivasa Ramanujan • Carl Sagan • Florence Nightingale • Thomas Edison • Aristotle • Marie Curie • Benjamin Franklin • Winston Churchill • Galileo Galilei • Sigmund Freud • Robert Bunsen • Louis Pasteur • Theodore Roosevelt • Abraham Lincoln • Ronald Reagan • Leonardo DaVinci • Michio Kaku • Karl Popper • Johann Goethe • Robert Oppenheimer • Charles Kettering  ... (more people)

Quotations about: • Atomic  Bomb • Biology • Chemistry • Deforestation • Engineering • Anatomy • Astronomy • Bacteria • Biochemistry • Botany • Conservation • Dinosaur • Environment • Fractal • Genetics • Geology • History of Science • Invention • Jupiter • Knowledge • Love • Mathematics • Measurement • Medicine • Natural Resource • Organic Chemistry • Physics • Physician • Quantum Theory • Research • Science and Art • Teacher • Technology • Universe • Volcano • Virus • Wind Power • Women Scientists • X-Rays • Youth • Zoology  ... (more topics)
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- 100 -
Sophie Germain
Gertrude Elion
Ernest Rutherford
James Chadwick
Marcel Proust
William Harvey
Johann Goethe
John Keynes
Carl Gauss
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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