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Can't Quotes (9 quotes)
Can't Quotes

Always listen to experts.They’ll tell you what can’t be done, and why. Then do it.
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 256.
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Bees are not as busy as we think they are. They jest can’t buzz any slower.
As quoted in Henry Wysham Lanier, The Golden Book Magazine (1931), Vol. 13, 85.
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Certainly the game is rigged. Don’t let that stop you; if you don’t bet, you can’t win.
In 'From the Notebooks of Lazarus Long', Time Enough for Love: The Lives of Lazarus Long (1973), 256.
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I would think I knew nothing in physics if I could say only how things could be but, without demonstrating that they can’t be otherwise.
From the original French, “Pour la Physique, ie croyrois n’y rien sçauoir, si ie ne sçauois que dire comment les choses peuuent estre, sans demonstrer qu’elles ne peuuent estre autrement,” in letter (11 Mar 1640) to Père Marin Mersenne, collected in Lettres de Mr Descartes (1659), Vol. 2, 213. As translated by John Cottingham, et al., (trans.), in The Philosophical Writings of Descartes: Volume 3, The Correspondence (1991), 145.
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I’ve tried to make the men around me feel as I do, that we are embarked as pioneers upon a new science and industry in which our problems are so new and unusual that it behooves no one to dismiss any novel idea with the statement, “It can’t be done.”
Start of Boeing’s quote, inscribed on his memorial at the Boeing Developmental Center, Tukwila, WA, as given in Mike Lombardi, 'Historical Perspective: 50 years at the Leading Edge', Boeing Frontiers (Aug 2009), 8.
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The reptilian idea of fun
Is to bask all day in the sun.
A physiological barrier,
Discovered by Carrier,
Says they can't breathe, if they run.
Written about David Carrier’s rule concerning a vertebrate’s breathing when lungs are affected because the rib structure distorts during locomotion. Thus sprawling vertebrates cannot run and breathe at the same time. In sidebar to 'Respiration, Metabolism, and Locomotion', History of Life (1991), 177. Carrier’s constraint idea was published in 'The evolution of locomotor stamina in tetrapods: circumventing a mechanical constraint' Paleobiology (1987), 13, 326-341.
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We can’t all be Einstein (because we don’t all play the violin). At the very least we need a sort of street-smart science: the ability to recognize evidence gather it assess it and act on it.
In Light Elements: Essays in Science from Gravity to Levity (1991), 14.
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When you have made a thorough and reasonably long effort, to understand a thing, and still feel puzzled by it, stop, you will only hurt yourself by going on. Put it aside till the next morning; and if then you can’t make it out, and have no one to explain it to you, put it aside entirely, and go back to that part of the subject which you do understand.
From letter to Edith Rix with hints for studying (about Mar 1885), in Stuart Dodgson Collingwood, The Life and Letters of Lewis Carroll (1898), 240.
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You can’t plough a field by turning it over in your mind.
Anonymous
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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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- 90 -
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- 80 -
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- 70 -
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- 60 -
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- 50 -
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- 40 -
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- 30 -
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- 20 -
Carl Sagan
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- 10 -
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