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Home > Category Index for Science Quotations > Category Index I > Category: Impervious

Impervious Quotes (5 quotes)

A mind not wholly wishful to reach the truth, or to rest it in or obey it when found, is to that extent a mind impervious to truth an incapable of unbiased belief.
Recent Theistic Discussion: the twentieth series of Croall Lectures (1921), 78. In The Homiletic Review, Vol. 83-84 (1922), Vol. 84, 290.
Science quotes on:  |  Belief (400)  |  Bias (15)  |  Truth (750)

God help the teacher, if a man of sensibility and genius, when a booby father presents him with his booby son, and insists on lighting up the rays of science in a fellow's head whose skull is impervious and inaccessible by any other way than a positive fracture with a cudgel.
In a letter to Mr. Cunningham, 11 Jun 1791. Quoted in James Wood Dictionary of Quotations from Ancient and Modern, English and Foreign Sources (1893), 126:18.
Science quotes on:  |  Teaching (99)

I was working with a Crookes tube covered by a shield of black cardboard. A piece of barium platino-cyanide paper lay on the bench there. I had been passing a current through the tube, and I noticed a peculiar black line across the paper. …
The effect was one which could only be produced in ordinary parlance by the passage of light. No light could come from the tube because the shield which covered it was impervious to any light known even that of the electric arc. …
I did not think; I investigated. …
I assumed that the effect must have come from the tube since its character indicated that it could come from nowhere else. … It seemed at first a new kind of invisible light. It was clearly something new something unrecorded. …
There is much to do, and I am busy, very busy. [Describing to a journalist the discovery of X-rays that he had made on 8 Nov 1895.]
In H.J.W. Dam in 'The New Marvel in Photography", McClure's Magazine (Apr 1896), 4:5, 413.
Science quotes on:  |  Arc (5)  |  Busy (21)  |  Current (43)  |  Discovery (591)  |  Experiment (543)  |  Investigate (49)  |  Light (246)  |  Photograph (17)  |  Ray (32)  |  Shield (4)  |  Test (96)  |  Thinking (222)  |  X-ray (18)

That the machine of Heaven is not a hard and impervious body full of various real spheres, as up to now has been believed by most people. It will be proved that it extends everywhere, most fluid and simple, and nowhere presents obstacles as was formerly held, the circuits of the Planets being wholly free and without the labour and whirling round of any real spheres at all, being divinely governed under a given law.
De Mundi Aetherei Recentioribus Phaenomenis (On Recent Phenomena in the Aetherial World) (1588). Quoted in M. Boas Hall, The Scientific Renaissance 1450-1630 (1962), 117.
Science quotes on:  |  Planet (199)

The interior parts of the earth and its internal depths are a region totally impervious to the eye of mortal man, and can least of all be approached by those ordinary paths of hypothesis adopted by naturalists and geologists. The region designed for the existence of man, and of every other creature endowed with organic life, as well as the sphere opened to the perception of man's senses, is confined to a limited space between the upper and lower parts of the earth, exceedingly small in proportion to the diameter, or even semi-diameter of the earth, and forming only the exterior surface, or outer skin, of the great body of the earth.
In Friedrich von Schlegel and James Burton Robertson (trans.), The Philosophy of History (1835), 20.
Science quotes on:  |  Earth (487)  |  Exterior (3)  |  Geologist (42)  |  Hypothesis (227)  |  Interior (13)  |  Naturalist (49)  |  Skin (17)

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
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- 90 -
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- 80 -
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- 70 -
Samuel Morse
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- 60 -
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- 50 -
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- 40 -
Pierre Fermat
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JJ Thomson
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- 30 -
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- 20 -
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- 10 -
John Watson
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