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Who said: “As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality.”
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Home > Category Index for Science Quotations > Category Index C > Category: Contagion

Contagion Quotes (4 quotes)

Professor von Pirquet has come to this country exactly at the right time to aid us. He has shown us how to detect tuberculosis before it has become so developed as to be contagious and has so taken hold of the individual as to be recognized by any other means. In thousands of cases I for my part am unable to detect tuberculosis in infancy or early childhood without the aid of the tuberculin test which Prof. von Pirquet has shown to be the best. He has taught us how by tubercular skin tests, to detect it. ... What Dr. von Pirquet has done already will make his name go down to posterity as one of the great reformers in tuberculin tests and as one who has done an immense amount of good to humanity. The skin test in twenty-four hours will show you whether the case is tubercular.
Discussion on 'The Relation of Tuberculosis to Infant Mortality', read at the third mid-year meeting of the American Academy of Medicine, New Haven, Conn, (4 Nov 1909). In Bulletin of the American Academy of Medicine (1910), 11, 78.
Science quotes on:  |  Childhood (23)  |  Detection (12)  |  History (302)  |  Humanity (104)  |  Infancy (6)  |  Baron Clemens von Pirquet (3)  |  Recognition (62)  |  Reformer (4)  |  Skin (17)  |  Test (96)  |  Tuberculosis (8)

That ability to impart knowledge … what does it consist of? … a deep belief in the interest and importance of the thing taught, a concern about it amounting to a sort of passion. A man who knows a subject thoroughly, a man so soaked in it that he eats it, sleeps it and dreams it—this man can always teach it with success, no matter how little he knows of technical pedagogy. That is because there is enthusiasm in him, and because enthusiasm is almost as contagious as fear or the barber’s itch. An enthusiast is willing to go to any trouble to impart the glad news bubbling within him. He thinks that it is important and valuable for to know; given the slightest glow of interest in a pupil to start with, he will fan that glow to a flame. No hollow formalism cripples him and slows him down. He drags his best pupils along as fast as they can go, and he is so full of the thing that he never tires of expounding its elements to the dullest.
This passion, so unordered and yet so potent, explains the capacity for teaching that one frequently observes in scientific men of high attainments in their specialties—for example, Huxley, Ostwald, Karl Ludwig, Virchow, Billroth, Jowett, William G. Sumner, Halsted and Osler—men who knew nothing whatever about the so-called science of pedagogy, and would have derided its alleged principles if they had heard them stated.
In Prejudices: third series (1922), 241-2.
For a longer excerpt, see H.L. Mencken on Teaching, Enthusiasm and Pedagogy.
Science quotes on:  |  Ability (75)  |  Attainment (35)  |  Barber (3)  |  Belief (400)  |  Theodor Billroth (2)  |  Concern (76)  |  Derision (6)  |  Dream (92)  |  Enthusiasm (28)  |  Fan (2)  |  Fear (113)  |  Flame (23)  |  Formalism (5)  |  Glow (7)  |  William Stewart Halsted (2)  |  Thomas Henry Huxley (119)  |  Imparting (3)  |  Importance (183)  |  Interest (170)  |  Itch (5)  |  Benjamin Jowett (4)  |  Knowledge (1128)  |  Carl Friedrich Wilhelm Ludwig (3)  |  Men Of Science (97)  |  News (12)  |  Sir William Osler (35)  |  Ostwald_Carl (2)  |  Passion (54)  |  Pupil (16)  |  Sleep (42)  |  Specialty (8)  |  Subject (129)  |  Teaching (99)  |  Value (180)  |  Rudolf Virchow (38)

The native hospital in Tunis was the focal point of my research. Often, when going to the hospital, I had to step over the bodies of typhus patients who were awaiting admission to the hospital and had fallen exhausted at the door. We had observed a certain phenomenon at the hospital, of which no one recognized the significance, and which drew my attention. In those days typhus patients were accommodated in the open medical wards. Before reaching the door of the wards they spread contagion. They transmitted the disease to the families that sheltered them, and doctors visiting them were also infected. The administrative staff admitting the patients, the personnel responsible for taking their clothes and linen, and the laundry staff were also contaminated. In spite of this, once admitted to the general ward the typhus patient did not contaminate any of the other patients, the nurses or the doctors. I took this observation as my guide. I asked myself what happened between the entrance to the hospital and the wards. This is what happened: the typhus patient was stripped of his clothes and linen, shaved and washed. The contagious agent was therefore something attached to his skin and clothing, something which soap and water could remove. It could only be the louse. It was the louse.
'Investigations on Typhus', Nobel lecture, 1928. In Nobel Lectures: Physiology or Medicine 1922-1941 (1965), 181.
Science quotes on:  |  Clothes (8)  |  Discovery (591)  |  Disease (257)  |  Hospital (33)  |  Louse (5)  |  Patient (116)  |  Research (517)  |  Shave (2)  |  Soap (11)  |  Typhus (2)  |  Ward (4)  |  Wash (6)

To demonstrate experimentally that a microscopic organism actually is the cause of a disease and the agent of contagion, I know no other way, in the present state of Science, than to subject the microbe (the new and happy term introduced by M. Sιdillot) to the method of cultivation out of the body.
Paper read to the French Academy of Sciences (29 Apr 1878), published in Comptes Rendus de l'Academie des Sciences, 86, 1037-43, as translated by H.C.Ernst. Collected in Charles W. Eliot (ed.) The Harvard Classics, Vol. 38; Scientific Papers: Physiology, Medicine, Surgery, Geology (1910), 364.
Science quotes on:  |  Agent (27)  |  Body (193)  |  Cause (231)  |  Cultivation (23)  |  Demonstration (51)  |  Disease (257)  |  Experiment (543)  |  Introduce (27)  |  Knowledge (1128)  |  Method (154)  |  Microbe (17)  |  Microscopic (10)  |  Nomenclature (129)  |  Organism (126)  |  Present (103)


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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Sophie Germain
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- 90 -
Antoine Lavoisier
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Euclid
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Andre Ampere
Winston Churchill
- 80 -
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Bible
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- 70 -
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- 60 -
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- 50 -
Stephen Hawking
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- 40 -
Pierre Fermat
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- 30 -
Andreas Vesalius
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- 20 -
Carl Sagan
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- 10 -
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