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Who said: “A change in motion is proportional to the motive force impressed and takes place along the straight line in which that force is impressed.”
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Someone Quotes (13 quotes)

An optimist is someone who believes the future is uncertain.
Anonymous
No primary source found, so Webmaster believes this is merely anonymous. However, in Arnold O. Allen, Probability, Statistics, and Queueing Theory (1990), it is attributed to Edward Teller; but also occasionally seen on the Web attributed to Leo Szilard. If you know a primary source, please contact Webmaster.
Science quotes on:  |  Belief (400)  |  Future (229)  |  Optimist (4)  |  Uncertainty (37)

As belief shrinks from this world, it is more necessary than ever that someone believe. Wild-eyed men in caves. Nuns in black. Monks who do not speak. We are left to believe... Hell is when no one believes.
White Noise. Quoted in Kim Lim (ed.), 1,001 Pearls of Spiritual Wisdom: Words to Enrich, Inspire, and Guide Your Life (2014), 24
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By the act of observation we have selected a ‘real’ history out of the many realities, and once someone has seen a tree in our world it stays there even when nobody is looking at it.
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Science quotes on:  |  Act (80)  |  History (302)  |  Nobody (38)  |  Observation (418)  |  Real (95)  |  Reality (140)  |  See (197)  |  Select (5)  |  Stay (15)  |  Tree (143)  |  World (667)

Conscience is the inner voice warning us that someone may be looking.
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Science quotes on:  |  Conscience (36)  |  Inner (27)  |  Voice (41)  |  Warn (2)

If a given scientist had not made a given discovery, someone else would have done so a little later. Johann Mendel dies unknown after having discovered the laws of heredity: thirty-five years later, three men rediscover them. But the book that is not written will never be written. The premature death of a great scientist delays humanity; that of a great writer deprives it.
Pensιes d'un Biologiste (1939). Translated in The Substance of Man (1962), 89.
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If someone separated the art of counting and measuring and weighing from all the other arts, what was left of each (of the others) would be, so to speak, insignificant.
Plato
Philebus 55e. Trans. R. W. Sharples.
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I’m not an atheist and I don’t think I can call myself a pantheist. We are in the position of a little child entering a huge library filled with books in many different languages. The child knows someone must have written those books. It doe s not know how. The child dimly suspects a mysterious order in the arrangement of the books but doesn’t know what it is. That, it seems to me, is the attitude of even the most intelligent human being toward God.
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Science quotes on:  |  Arrangement (45)  |  Atheist (13)  |  Attitude (47)  |  Book (181)  |  Call (68)  |  Child (189)  |  Different (110)  |  Dimly (4)  |  Enter (20)  |  Fill (35)  |  God (454)  |  Huge (15)  |  Human Being (54)  |  Intelligent (35)  |  Know (321)  |  Language (155)  |  Library (37)  |  Little (126)  |  Myself (22)  |  Mysterious (21)  |  Order (167)  |  Position (54)  |  Seem (89)  |  Suspect (12)  |  Think (205)  |  Toward (29)  |  Write (87)

I’ve never looked through a keyhole without finding someone was looking back.
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Science quotes on:  |  Back (55)  |  Find (248)  |  Keyhole (5)

Nature, the parent of all things, designed the human backbone to be like a keel or foundation. It is because we have a backbone that we can walk upright and stand erect. But this was not the only purpose for which Nature provided it; here, as elsewhere, she displayed great skill in turning the construction of a single member to a variety of different uses.
It Provides a Path for the Spinal Marrow, Yet is Flexible.
Firstly, she bored a hole through the posterior region of the bodies of all the vertebrae, thus fashioning a suitable pathway for the spinal marrow which would descend through them.
Secondly, she did not make the backbone out of one single bone with no joints. Such a unified construction would have afforded greater stability and a safer seat for the spinal marrow since, not having joints, the column could not have suffered dislocations, displacements, or distortions. If the Creator of the world had paid such attention to resistance to injury and had subordinated the value and importance of all other aims in the fabric of parts of the body to this one, he would certainly have made a single backbone with no joints, as when someone constructing an animal of wood or stone forms the backbone of one single and continuous component. Even if man were destined only to bend and straighten his back, it would not have been appropriate to construct the whole from one single bone. And in fact, since it was necessary that man, by virtue of his backbone, be able to perform a great variety of movements, it was better that it be constructed from many bones, even though as a result of this it was rendered more liable to injury.
From De Humani Corporis Fabrica Libri Septem: (1543), Book I, 57-58, as translated by William Frank Richardson, in 'Nature’s Skill in Creating a Backbone to Hold Us Erect', On The Fabric of the Human Body: Book I: The Bones and Cartilages (1998), 138.
Science quotes on:  |  Animal (309)  |  Back (55)  |  Backbone (8)  |  Bend (8)  |  Bone (57)  |  Bored (2)  |  Column (10)  |  Dislocation (2)  |  Distortion (10)  |  Flexible (3)  |  Form (210)  |  Foundation (75)  |  Human Body (30)  |  Importance (183)  |  Injury (14)  |  Joint (11)  |  Keel (3)  |  Marrow (5)  |  Member (27)  |  Movement (65)  |  Nature (1029)  |  Necessity (125)  |  Path (59)  |  Posterior (3)  |  Skill (50)  |  Stability (17)  |  Stand (60)  |  Stone (57)  |  Straight (15)  |  Unified (9)  |  Vertebra (4)  |  Virtue (55)  |  Walk (56)  |  Wood (33)

So many people today–and even professional scientists–seem to me like someone who has seen thousands of trees but has never seen a forest . A knowledge of the historic and philosophical background gives that kind of independence from prejudices of his generation from which most scientists are suffering. This independence created by philosophical insight is–in my opinion–the mark of distinction between a mere artisan or specialist and a real seeker after truth.
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Through the magic of motion pictures, someone who’s never left Peoria knows the softness of a Paris spring, the color of a Nile sunset, the sorts of vegetation one will find along the upper Amazon and that Big Ben has not yet gone digital.
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Science quotes on:  |  Amazon (6)  |  Color (78)  |  Digital (4)  |  Find (248)  |  Know (321)  |  Leave (63)  |  Magic (67)  |  Motion (127)  |  Nile (4)  |  Paris (9)  |  Picture (55)  |  Softness (2)  |  Sort (32)  |  Spring (47)  |  Sunset (15)  |  Upper (3)  |  Vegetation (16)

To come very near to a true theory, and to grasp its precise application, are two different things, as the history of science teaches us. Everything of importance has been said before by someone who did not discover it.
In The Organisation of Thought (1917), 127. Collected in The Interpretation of Science: Selected Essays (1961), 33.
Science quotes on:  |  Application (117)  |  Discovery (591)  |  Everything (120)  |  History Of Science (53)  |  Importance (183)  |  Theory (582)  |  Truth (750)

Who ever thought up the word “Mammogram?” Every time I hear it, I think I’m supposed to put my breast in an envelope and send it to someone.
Jan King
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Science quotes on:  |  Breast (6)  |  Envelope (5)  |  Hear (33)  |  Send (13)  |  Suppose (29)  |  Think (205)  |  Thought (374)  |  Time (439)  |  Word (221)


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)

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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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