Find science on or your birthday

Today in Science History - Quickie Quiz
Who said: “Nature does nothing in vain when less will serve; for Nature is pleased with simplicity and affects not the pomp of superfluous causes.”
more quiz questions >>
Home > Category Index for Science Quotations > Category Index S > Category: Shadow

Shadow Quotes (16 quotes)

Combien de gens se font abstraits pour paraître profonds! La plupart des termes abstraits sont des ombres qui cachent des vides.
How many people become abstract in order to appear profound! Most abstract terms are shadows that conceal a void.
Quoted in M. Paul De Raynal, Pensées de J. Joubert (1862), 456.
Science quotes on:  |  Abstract (19)  |  Profound (23)  |  Void (8)

An institution is the lengthened shadow of one man.
From 'Self-Reliance', collected in The Complete Works of Ralph Waldo Emerson (1903), 61.
Science quotes on:  |  Institution (15)  |  Man (258)  |  One (5)

Astrology is a disease, not a science... It is a tree under the shadow of which all sorts of superstitions thrive. ... Only fools and charlatans lend value to it.
Letter to Marseilles, 1195. Responsa, ii. 25b. In ‎Philip Birnbaum (ed.), Mishneh Torah: Maimonides' Code of Law and Ethics (1974), 35.
Science quotes on:  |  Astrology (19)  |  Charlatan (3)  |  Disease (170)  |  Fool (32)  |  Science (875)  |  Superstition (33)  |  Thrive (2)  |  Tree (88)  |  Value (63)

But however secure and well-regulated civilized life may become, bacteria, Protozoa, viruses, infected fleas, lice, ticks, mosquitoes, and bedbugs will always lurk in the shadows ready to pounce when neglect, poverty, famine, or war lets down the defenses.
Rats, Lice and History (1934), 13-4.
Science quotes on:  |  Bacteria (17)  |  Bedbug (2)  |  Civilization (90)  |  Defense (8)  |  Famine (5)  |  Flea (6)  |  Infection (15)  |  Mosquito (4)  |  Neglect (10)  |  Pounce (3)  |  Poverty (21)  |  Protozoa (2)  |  Tick (4)  |  Virus (16)  |  War (79)

But why, it has been asked, did you go there [the Antarctic]? Of what use to civilization can this lifeless continent be? ... [Earlier] expeditions contributed something to the accumulating knowledge of the Antarctic ... that helps us thrust back further the physical and spiritual shadows enfolding our terrestrial existence. Is it not true that one of the strongest and most continuously sustained impulses working in civilization is that which leads to discovery? As long as any part of the world remains obscure, the curiosity of man must draw him there, as the lodestone draws the mariner's needle, until he comprehends its secret.
In 'Hoover Presents Special Medal to Byrd...', New York Times (21 Jun 1930), 1.
Science quotes on:  |  Accumulation (16)  |  Antarctic (4)  |  Asking (18)  |  Civilization (90)  |  Comprehension (30)  |  Continent (22)  |  Contribution (23)  |  Curiosity (52)  |  Discovery (360)  |  Existence (150)  |  Expedition (4)  |  Going (5)  |  Impulse (12)  |  Knowledge (679)  |  Lifeless (3)  |  Lodestone (4)  |  Mariner (3)  |  Obscurity (9)  |  Secret (44)  |  Terrestrial (7)  |  Use (54)  |  World (231)

Exper. I. I made a small hole in a window-shutter, and covered it with a piece of thick paper, which I perforated with a fine needle. For greater convenience of observation I placed a small looking-glass without the window-shutter, in such a position as to reflect the sun's light, in a direction nearly horizontal, upon the opposite wall, and to cause the cone of diverging light to pass over a table on which were several little screens of card-paper. I brought into the sunbeam a slip of card, about one-thirtieth of an inch in breadth, and observed its shadow, either on the wall or on other cards held at different distances. Besides the fringes of colour on each side of the shadow, the shadow itself was divided by similar parallel fringes, of smaller dimensions, differing in number, according to the distance at which the shadow was observed, but leaving the middle of the shadow always white. Now these fringes were the joint effects of the portions of light passing on each side of the slip of card and inflected, or rather diffracted, into the shadow. For, a little screen being placed a few inches from the card, so as to receive either edge of the shadow on its margin, all the fringes which had before been observed in the shadow on the wall, immediately disappeared, although the light inflected on the other side was allowed to retain its course, and although this light must have undergone any modification that the proximity of the other edge of the slip of card might have been capable of occasioning... Nor was it for want of a sufficient intensity of light that one of the two portions was incapable of producing the fringes alone; for when they were both uninterrupted, the lines appeared, even if the intensity was reduced to one-tenth or one-twentieth.
'Experiments and Calculations Relative to Physical Optics' (read in 1803), Philosophical Transactions (1804), 94, 2-3.
Science quotes on:  |  Experiment (369)  |  Fringe (3)  |  Hole (6)  |  Intensity (15)  |  Interference (7)  |  Light (117)  |  Observation (264)  |  Reflection (26)  |  Screen (5)  |  Sunbeam (2)

I used to measure the Heavens, now I measure the shadows of Earth. The mind belonged to Heaven, the body's shadow lies here.
Kepler's epitaph for himself.
Johannes Kepler Gesammelte Werke (1937- ), vol. 19, p. 393.
Science quotes on:  |  Body (88)  |  Earth (250)  |  Epitaph (18)  |  Heaven (55)  |  Measurement (112)  |  Mind (272)

If the hand be held between the discharge-tube and the screen, the darker shadow of the bones is seen within the slightly dark shadow-image of the hand itself... For brevity's sake I shall use the expression 'rays'; and to distinguish them from others of this name I shall call them 'X-rays'.
'On a New Kind of Rays' (1895). In Herbert S. Klickstein, Wilhelm Conrad Rontgen: On a New Kind of Rays, A Bibliographic Study (1966), 4.
Science quotes on:  |  Brevity (2)  |  Distinguishing (8)  |  Expression (44)  |  Hand (34)  |  Image (15)  |  Name (58)  |  Nomenclature (102)  |  Screen (5)  |  X-ray (13)

In the world of physics we watch a shadowgraph performance of the drama of familiar life. The shadow of my elbow rests on the shadow table as the shadow ink flows over the shadow paper. It is all symbolic, and as a symbol the physicist leaves it. ... The frank realization that physical science is concerned with a world of shadows is one of the most significant of recent advances.
In The Nature of the Physical World (1928, 2005), xiv-xv.
Science quotes on:  |  Advance (52)  |  Concern (30)  |  Drama (4)  |  Elbow (2)  |  Ink (4)  |  Physical Science (32)  |  Physics (156)  |  Realization (22)  |  Significant (7)  |  Symbol (23)

Metaphysical ghosts cannot be killed, because they cannot be touched; but they may be dispelled by dispelling the twilight in which shadows and solidities are easily confounded. The Vital Principle is an entity of this ghostly kind; and although the daylight has dissipated it, and positive Biology is no longer vexed with its visitations, it nevertheless reappears in another shape in the shadowy region of mystery which surrounds biological and all other questions.
The History of Philosophy from Thales to Comte (1867), lxxxiv.
Science quotes on:  |  Biology (83)  |  Daylight (5)  |  Ghost (8)  |  Metaphysics (24)  |  Mystery (74)  |  Principle (97)  |  Question (159)

Poets need be in no degree jealous of the geologists. The stony science, with buried creations for its domains, and half an eternity charged with its annals, possesses its realms of dim and shadowy fields, in which troops of fancies already walk like disembodied ghosts in the old fields of Elysium, and which bid fair to be quite dark and uncertain enough for all the purposes of poesy for centuries to come.
Lecture Third, collected in Popular Geology: A Series of Lectures Read Before the Philosophical Institution of Edinburgh, with Descriptive Sketches from a Geologist's Portfolio (1859), 127.
Science quotes on:  |  Annal (2)  |  Disembodied (2)  |  Domain (6)  |  Eternity (22)  |  Fancy (10)  |  Field (69)  |  Geologist (26)  |  Ghost (8)  |  Jealousy (4)  |  Poet (26)  |  Realm (16)  |  Science And Poetry (4)  |  Uncertainty (25)

The Mathematics, I say, which effectually exercises, not vainly deludes or vexatiously torments studious Minds with obscure Subtilties, perplexed Difficulties, or contentious Disquisitions; which overcomes without Opposition, triumphs without Pomp, compels without Force, and rules absolutely without Loss of Liberty; which does not privately over-reach a weak Faith, but openly assaults an armed Reason, obtains a total Victory, and puts on inevitable Chains; whose Words are so many Oracles, and Works as many Miracles; which blabs out nothing rashly, nor designs anything from the Purpose, but plainly demonstrates and readily performs all Things within its Verge; which obtrudes no false Shadow of Science, but the very Science itself, the Mind firmly adhering to it, as soon as possessed of it, and can never after desert it of its own Accord, or be deprived of it by any Force of others: Lastly the Mathematics, which depends upon Principles clear to the Mind, and agreeable to Experience; which draws certain Conclusions, instructs by profitable Rules, unfolds pleasant Questions; and produces wonderful Effects; which is the fruitful Parent of, I had almost said all, Arts, the unshaken Foundation of Sciences, and the plentiful Fountain of Advantage to human Affairs.
Address to the University of Cambridge upon being elected Lucasian Professor of Mathematics (14 Mar 1664). In Mathematical Lectures (1734), xxviii.
Science quotes on:  |  Advantage (22)  |  Chain (21)  |  Compel (4)  |  Conclusion (74)  |  Difficulty (76)  |  Experience (132)  |  Faith (73)  |  False (29)  |  Foundation (31)  |  Fountain (7)  |  Instruct (2)  |  Liberty (9)  |  Mathematics (367)  |  Mind (272)  |  Miracle (25)  |  Oracle (3)  |  Pomp (2)  |  Principle (97)  |  Purpose (66)  |  Question (159)  |  Rashly (2)  |  Reason (173)  |  Rule (52)  |  Science (875)  |  Science And Art (58)  |  Torment (5)  |  Victory (10)  |  Word (97)

The One remains, the many change and pass;
Heaven's light forever shines, Earth's shadows fly;
Life, like a dome of many-coloured glass,
Stains the white radiance of Eternity,
Until Death tramples it to fragments.
Adonais (1821), St. 52. In K. Raine (ed.), Shelley (1974), 209.
Science quotes on:  |  Change (133)  |  Color (9)  |  Death (183)  |  Eternity (22)  |  Fragment (13)  |  Glass (19)  |  Heaven (55)  |  Life (460)  |  Light (117)  |  Radiance (3)  |  Shine (3)  |  Stain (7)

There rolls the deep where grew the tree.
O earth, what changes hast thou seen!
There where the long street roars, hath been
The stillness of the central sea.
The hills are shadows, and they flow
From form to form, and nothing stands;
They melt like mist, the solid lands,
Like clouds they shape themselves and go.
In Memoriam A. H. H. (1850), canto 123. Collected in Alfred Tennyson and William James Rolfe (ed.) The Poetic and Dramatic works of Alfred, Lord Tennyson (1898), 194.
Science quotes on:  |  Central (8)  |  Change (133)  |  Cloud (22)  |  Deep (17)  |  Earth (250)  |  Flow (14)  |  Form (70)  |  Hill (14)  |  Land (27)  |  Melting (5)  |  Mist (2)  |  Nothing (89)  |  Roll (3)  |  Sea (57)  |  Seeing (29)  |  Shape (20)  |  Solid (14)  |  Stand (24)  |  Stillness (3)  |  Street (5)  |  Tree (88)

True rigor is productive, being distinguished in this from another rigor which is purely formal and tiresome, casting a shadow over the problems it touches.
From address to the section of Algebra and Analysis, International Congress of Arts and Sciences, St. Louis (22 Sep 1904), 'On the Development of Mathematical Analysis and its Relation to Certain Other Sciences,' as translated by M.W. Haskell in Bulletin of the American Mathematical Society (May 1905), 11, 417.
Science quotes on:  |  Casting (2)  |  Distinguish (11)  |  Formal (4)  |  Problem (180)  |  Productive (4)  |  Purely (4)  |  Rigor (6)  |  Touch (19)  |  True (29)

“I see no shadows,” saith the sun:
Yet he casts them every one.
Quoted without citation in George Iles, Canadian Stories (1918), 150. Webmaster has found no other source for this couplet, and wonders if it was coined by the author himself to ornament a chapter heading, or not. Please contact Webmaster if you know the primary source.
Science quotes on:  |  Cast (9)  |  See (43)  |  Sun (115)


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)
Sitewide search within all Today In Science History pages:
Custom Quotations Search - custom search within only our quotations pages:
Visit our Science and Scientist Quotations index for more Science Quotes from archaeologists, biologists, chemists, geologists, inventors and inventions, mathematicians, physicists, pioneers in medicine, science events and technology.

Names index: | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |

Categories index: | 1 | 2 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Author Icon
who invites your feedback

Today in Science History

Most Popular

Thank you for sharing.
Today in Science History
Sign up for Newsletter
with quiz, quotes and more.
- 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