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Who said: “Dangerous... to take shelter under a tree, during a thunder-gust. It has been fatal to many, both men and beasts.”
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Thumbnail of H. L. Mencken (source)
H. L. Mencken
(12 Sep 1880 - 29 Jan 1956)

American journalist and satirist , known as 'the Sage of Baltimore,' in whose satirical reports on the Scopes trial in Tennessee the "Monkey" trial name was coined. In 19 books and thousands of essays, his writings are a treasure of wisdom couched in a sparkling wit.

H. L. Mencken on Teaching, Enthusiasm and Pedagogy

A Quote on Teaching and Enthusiasm
in Scientific Men of Great Attainment

That ability to impart knowledge, it seems to me, has very little to do with technical method. It may operate at full function without any technical method at all, and contrariwise, the most elaborate of technical methods, whether out of Switzerland, Italy or Gary, Ind., cannot make it operate when it is not actually present.

And what does it consist of?

It consists, first, of a natural talent for dealing with children, for getting into their minds, for putting things in a way that they can comprehend. And it consists, secondly, 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.

Extract from Henry Louis Mencken, Prejudices: third series (1922), pages 241-242. (source)

See also:
  • Science Quotes by H. L. Mencken.
  • H.L. Mencken - Recollections of School Algebra, Chemistry, Physics and an Extraordinary Mathematics Teacher
  • Prejudices: The Complete Series, by H.L. Mencken. - book suggestion.
  • Booklist for H.L. Mencken.

Nature bears long with those who wrong her. She is patient under abuse. But when abuse has gone too far, when the time of reckoning finally comes, she is equally slow to be appeased and to turn away her wrath. (1882) -- Nathaniel Egleston, who was writing then about deforestation, but speaks equally well about the danger of climate change today.
Carl Sagan Thumbnail Carl Sagan: 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) ...(more by Sagan)

Albert Einstein: I used to wonder how it comes about that the electron is negative. Negative-positive—these are perfectly symmetric in physics. There is no reason whatever to prefer one to the other. Then why is the electron negative? I thought about this for a long time and at last all I could think was “It won the fight!” ...(more by Einstein)

Richard Feynman: It is the facts that matter, not the proofs. Physics can progress without the proofs, but we can't go on without the facts ... if the facts are right, then the proofs are a matter of playing around with the algebra correctly. ...(more by Feynman)
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