TODAY IN SCIENCE HISTORY ®  •  TODAYINSCI ®
Celebrating 24 Years on the Web
Find science on or your birthday

Today in Science History - Quickie Quiz
Who said: “Truth is ever to be found in simplicity, and not in the multiplicity and confusion of things.”
more quiz questions >>
Home > Category Index for Science Quotations > Category Index H > Category: Habitable

Habitable Quotes (3 quotes)

Every inhabitant of this planet must contemplate the day when this planet may no longer be habitable. Every man, woman and child lives under a nuclear sword of Damocles, hanging by the slenderest of threads, capable of being cut at any moment by accident or miscalculation or by madness. The weapons of war must be abolished before they abolish us.
Address to the United Nations General Assembly, (25 Sep 1961). On U.S. Department of State website.
Science quotes on:  |  Abolish (13)  |  Accident (92)  |  Atomic Bomb (115)  |  Being (1276)  |  Capable (174)  |  Child (333)  |  Contemplate (29)  |  Cut (116)  |  Hanging (4)  |  Inhabitant (50)  |  Life (1870)  |  Live (650)  |  Madness (33)  |  Man (2252)  |  Moment (260)  |  Must (1525)  |  Nuclear (110)  |  Planet (402)  |  Thread (36)  |  War (233)  |  Weapon (98)  |  Weapons (57)  |  Woman (160)

I think it would be a very rash presumption to think that nowhere else in the cosmos has nature repeated the strange experiment which she has performed on earth—that the whole purpose of creation has been staked on this one planet alone. It is probable that dotted through the cosmos there are other suns which provide the energy for life to attendant planets. It is apparent, however, that planets with just the right conditions of temperature, oxygen, water and atmosphere necessary for life are found rarely.
But uncommon as a habitable planet may be, non-terrestrial life exists, has existed and will continue to exist. In the absence of information, we can only surmise that the chance that it surpasses our own is as good as that it falls below our level.
As quoted by H. Gordon Garbedian in 'Ten Great Riddles That Call For Solution by Scientists', New York Times (5 Oct 1930), XX4. Garbedian gave no citation to a source for Shapley’s words. However, part of this quote is very similar to that of Sir Arthur Eddington: “It would indeed be rash to assume that nowhere else has Nature repeated the strange experiment which she has performed on the earth,” from 'Man’s Place in the Universe', Harper’s Magazine (Oct 1928), 157 573.
Science quotes on:  |  Absence (21)  |  Alone (324)  |  Apparent (85)  |  Atmosphere (117)  |  Chance (244)  |  Condition (362)  |  Continue (179)  |  Cosmos (64)  |  Creation (350)  |  Earth (1076)  |  Energy (373)  |  Exist (458)  |  Existence (481)  |  Experiment (736)  |  Extraterrestrial Life (20)  |  Fall (243)  |  Good (906)  |  Information (173)  |  Life (1870)  |  Nature (2017)  |  Necessary (370)  |  Necessity (197)  |  Nowhere (28)  |  Other (2233)  |  Oxygen (77)  |  Perform (123)  |  Performing (3)  |  Planet (402)  |  Presumption (15)  |  Purpose (336)  |  Rare (94)  |  Rash (15)  |  Repeat (44)  |  Right (473)  |  Stake (20)  |  Strange (160)  |  Sun (407)  |  Surmise (7)  |  Surpass (33)  |  Temperature (82)  |  Terrestrial (62)  |  Think (1122)  |  Through (846)  |  Uncommon (14)  |  Water (503)  |  Whole (756)  |  Will (2350)

Of … habitable worlds, such as the Earth, all which we may suppose to be of a terrestrial or terraqueous nature, and filled with beings of the human species, subject to mortality, it may not be amiss in this place to compute how many may he conceived within our finite view every clear Star-light night. … In all together then we may safely reckon 170,000,000, and yet be much within compass, exclusive Of the Comets which I judge to be by far the most numerous part of the creation.
In The Universe and the Stars: Being an Original Theory on the Visible Creation, Founded on the Laws of Nature (1750, 1837), 131-132.
Science quotes on:  |  Being (1276)  |  Clear (111)  |  Comet (65)  |  Compass (37)  |  Compute (19)  |  Creation (350)  |  Earth (1076)  |  Exclusive (29)  |  Finite (60)  |  Human (1512)  |  Judge (114)  |  Light (635)  |  Most (1728)  |  Nature (2017)  |  Night (133)  |  Numerous (70)  |  Reckon (31)  |  Species (435)  |  Star (460)  |  Starlight (5)  |  Subject (543)  |  Suppose (158)  |  Terrestrial (62)  |  Together (392)  |  View (496)  |  World (1850)


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)

Quotations about:Atomic  BombBiologyChemistryDeforestationEngineeringAnatomyAstronomyBacteriaBiochemistryBotanyConservationDinosaurEnvironmentFractalGeneticsGeologyHistory of ScienceInventionJupiterKnowledgeLoveMathematicsMeasurementMedicineNatural ResourceOrganic ChemistryPhysicsPhysicianQuantum TheoryResearchScience and ArtTeacherTechnologyUniverseVolcanoVirusWind PowerWomen ScientistsX-RaysYouthZoology  ... (more topics)
Sitewide search within all Today In Science History 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 |
Thank you for sharing.
- 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


by Ian Ellis
who invites your feedback
Thank you for sharing.
Today in Science History
Sign up for Newsletter
with quiz, quotes and more.