Richard Feynman cytaty (214 cytatów, strona 5)

I wanted most to give you some appreciation of the wonderful world and the physicist’s way of looking at it, which, I believe, is a major part of the true culture of modern times. (ang.)
Źródło: Richard Feynman, Robert Leighton i Matthew Sands, Feynmana wykłady z fizyki, t. III, Mechanika kwantowa, wyd. 2 popr., Państwowe Wydawnictwo Naukowe, Warszawa 1974, s. 435.

Feynmana wykłady z fizyki. Tom 3 Mechanika Kwantowa http://www.feynmanlectures.caltech.edu/III_22.html, 1968

Cytaty o pięknie

„W rzeczywistości wszystko po pewnym czasie się zatrzymuje.”

Richard Feynman

O rzeczywostości , O czasie

„Całą mechanikę kwantową da się wyprowadzić z doświadczenia z dwiema szczelinami.”

Richard Feynman

„Zjawisko, które rozważamy, musi wykazywać pewną trwałość lub stałość. Znaczy to, że jeśli zjawisko jest trudne do zbadania, to obserwowane w różnych sytuacjach powinno wykazywać w mniejszym lub większym stopniu takie same cechy.”

Richard Feynman

Źródło: kwiecień 1963

„Uprzedzenia sprawiają, że trudniej jest coś udowodnić, ale jeśli to coś istnieje, może mimo wszystko liczyć na odkrycie.”

Richard Feynman

Źródło: kwiecień 1963

„Nie mając zbyt szerokich kontaktów z innymi ojcami, nie zdawałem sobie sprawy z tego, jaki jest nadzwyczajny. Jak nauczył się głębokich podstaw nauki, jej umiłowania, chęci poznania tego, co się za nią kryje i dlaczego warto się w nią bawić? Tak naprawdę, nigdy go o to nie pytałem, bo zawsze zakładałem, że są to rzeczy, które ojcowie po prostu wiedzą.”

Richard Feynman książka A co ciebie obchodzi, co myślą inni?

o swoim ojcu.
A co ciebie obchodzi, co myślą inni?
Źródło: Narodziny naukowca

O narodzinach , O nauce

„Cóż to za dziwny gatunek, ci poeci, jeśli potrafią głosić chwałę Jowisza jako żywej istoty, a zachowują milczenie wobec Jowisza – ogromnej kuli złożonej z metanu i amoniaku.”

Richard Feynman

„Mechanika kwantowa opisuje przyrodę jako absurdalną z punktu widzenia zdrowego rozsądku. I w pełni zgadza się z doświadczeniem. Mam więc nadzieję, że zaakceptujecie naturę taką, jaka jest – absurdalną.”

Richard Feynman

O naturze

„Jeśli coś jest rzeczywiście prawdą, powtarzanie obserwacji i poprawianie ich efektywności zwiększa wyrazistość wyników, a nie zmniejsza ją.”

Richard Feynman

Źródło: kwiecień 1963

„Żaden rząd nie ma prawa decydować, co do prawdziwości naukowych zasad, ani w żaden sposób określać charakteru pytań, na które szuka się odpowiedzi. Nie może rząd też oceniać wartości estetycznej artystycznych kreacji, ani ograniczać form literackiej i artystycznej ekspresji. Nie powinien też ogłaszać słuszności doktryn ekonomicznych, historycznych, religijnych czy filozoficznych. Za to, ma w stosunku do swych obywateli obowiązek zapewniania wolności, aby pozwalała tym obywatelom udzielać się w dalszych przygodach i rozwoju rasy ludzkiej.”

Richard Feynman

O charakterze , O wolności , Pytanie

„Sądzę, że ma to pewne znaczenie w omawianej przez nas kwestii.”

Richard Feynman

I believe that has some significance for our problem.
Wygłoszone kąśliwym tonem do członków komisji badającej katastrofę promu kosmicznego Challenger po tym jak Feynman zaprezentował, że schłodzona uszczelka rakiety pomocniczej staje się krucha i łamliwa, co było główną przyczyną wypadku (11 lutego 1986 r.)

„Cel fizyki: ująć przyrodę jako różne przejawy tego samego zespołu praw.”

Richard Feynman

„Poeta powiedział: „Cały Wszechświat mieści się w szklance wina”. Prawdopodobnie nie dowiemy się nigdy, co dokładnie miał na myśli, ponieważ poeci nie po to piszą, by ich rozumiano.”

Richard Feynman

Źródło: Feynmana Wykłady Z Fizyki – Tom 1.1.

O myślach , O wszechświecie , O myśleniu

„Stworzenie czegoś nowego, a jednocześnie zgodnego z tym, co wiadomo dotychczas jest niezwykle trudne.”

Richard Feynman

„Nauka to wiara w ignorancję ekspertów.”

Richard Feynman

O wierze , O nauce

„Jeśli chcesz jako fizyk zrobić kawałek naprawdę dobrej roboty, to musisz ją robić nieprzerwanie. A to dlatego, że jeśli układa się w całość pomysły mgliste i trudne do zapamiętania, to tak jakby budowało się domek z kart, bardzo chwiejny, a zapomnienie choćby jednej z nich powoduje rozsypanie się całej konstrukcji. Nie wiesz, jak doszedłeś do tego, co już miałeś i musisz zaczynać budowę od początku. a jeśli masz obowiązki administracyjne lub coś w tym rodzaju, to zawsze coś ci przerywa.”

Richard Feynman

„Ogrom wiadomości można w dużej mierze skondensować w postaci praw.”

Richard Feynman

Richard Feynman: Cytaty po angielsku

“Science alone of all the subjects contains within itself the lesson of the danger of belief in the infallibility of the greatest teachers of the preceding generation.”

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Richard Feynman

address " What is Science? http://www.fotuva.org/feynman/what_is_science.html", presented at the fifteenth annual meeting of the National Science Teachers Association, in New York City (1966), published in The Physics Teacher, volume 7, issue 6 (1969), p. 313-320

“Science is the belief in the ignorance of experts.”

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Richard Feynman

“We have a habit in writing articles published in scientific journals to make the work as finished as possible, to cover all the tracks, to not worry about the blind alleys or to describe how you had the wrong idea first, and so on. So there isn't any place to publish, in a dignified manner, what you actually did in order to get to do the work.”

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Richard Feynman

"The Development of the Space-Time View of Quantum Electrodynamics," Nobel Lecture http://nobelprize.org/physics/laureates/1965/feynman-lecture.html (11 December 1965)

“The theoretical broadening which comes from having many humanities subjects on the campus is offset by the general dopiness of the people who study these things.”

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Richard Feynman

letter to Robert Bacher (6 April 1950), quoted in Genius: The Life and Science of Richard Feynman (1992) by James Gleick, p. 278

“So we have these wide principles which sweep across all the different laws, and if one takes too seriously its derivations, and feels that this is only valid because this [assumed more fundamental principle] is valid, you cannot understand the interconnections of the different branches of physics. Some day, when physics is complete, then maybe with this kind of argument we'll know all the laws, then we can start with some axioms (and no doubt somebody will figure out a particular way of doing it) and then all the deductions will be made. But while we don't know all the laws, we can use some to make guesses at theorems which extend beyond the proof.”

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Richard Feynman książka The Character of Physical Law

Źródło: The Character of Physical Law (1965), chapter 2, “The Relation of Mathematics to Physics”

“There are many interesting phenomena … which involve a mixture of physical phenomena and physiological processes, and the full appreciation of natural phenomena, as we see them, must go beyond physics in the usual sense. We make no apologies for making these excursions into other fields, because the separation of fields, as we have emphasized, is merely a human convenience, and an unnatural thing. Nature is not interested in our separations, and many of the interesting phenomena bridge the gaps between fields.”

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Richard Feynman

volume I; lecture 35, "Color Vision"; 35-1 "The human eye"; p. 35-1
The Feynman Lectures on Physics (1964)

“Do not keep saying to yourself, if you can possibly avoid it, "But how can it be like that?" because you will get "down the drain", into a blind alley from which nobody has yet escaped. Nobody knows how it can be like that.”

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Richard Feynman książka The Character of Physical Law

Concerning the apparent absurdities of quantum behavior.
chapter 6, “Probability and Uncertainty — the Quantum Mechanical View of Nature,” p. 129
The Character of Physical Law (1965)

“It is impossible, by the way, when picking one example of anything, to avoid picking one which is atypical in some sense.”

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Richard Feynman książka The Character of Physical Law

Źródło: The Character of Physical Law (1965), chapter 1, “The Law of Gravitation,” p. 27: video http://www.youtube.com/watch?v=j3mhkYbznBk&t=37m16s

“Hell, if I could explain it to the average person, it wouldn't have been worth the Nobel prize.”

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Richard Feynman

statement (c. 1965), quoted in " An irreverent best-seller by Nobel laureate Richard Feynman gives nerds a good name http://www.people.com/people/article/0,,20091337,00.html", People Magazine (22 July 1985)

“We cannot define anything precisely. If we attempt to, we get into that paralysis of thought that comes to philosophers, who sit opposite each other, one saying to the other, "You don't know what you are talking about!". The second one says, "What do you mean by know? What do you mean by talking?”

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Richard Feynman

What do you mean by you?"
volume I; lecture 8, "Motion"; section 8-1, "Description of motion"; p. 8-2
The Feynman Lectures on Physics (1964)

“It's a great game to try to look at the past, at an unscientific era, look at something there, and say have we got the same thing now, and where is it? So I would like to amuse myself with this game. First, we take witch doctors. The witch doctor says he knows how to cure. There are spirits inside which are trying to get out. … Put a snakeskin on and take quinine from the bark of a tree. The quinine works. He doesn't know he's got the wrong theory of what happens. If I'm in the tribe and I'm sick, I go to the witch doctor. He knows more about it than anyone else. But I keep trying to tell him he doesn't know what he's doing and that someday when people investigate the thing freely and get free of all his complicated ideas they'll learn much better ways of doing it. Who are the witch doctors? Psychoanalysts and psychiatrists, of course.”

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Richard Feynman książka The Meaning of It All

lecture III: "This Unscientific Age"
David Goodstein reports http://www.americanscientist.org/bookshelf/pub/feynmaniacs-should-read-this-review-skip-lecture-collection-save-22-simoleons that the entire psychology department walked out in a huff at this point.
The Meaning of It All (1999)

“People are always asking for the latest developments in the unification of this theory with that theory, and they don't give us a chance to tell them anything about what we know pretty well. They always want to know the things we don't know.”

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Richard Feynman książka QED: The Strange Theory of Light and Matter

Źródło: QED: The Strange Theory of Light and Matter (1985), p. 3

“I'd hate to die twice. It's so boring.”

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Richard Feynman

last words (15 February 1988), according to James Gleick, in Genius: The Life and Science of Richard Feynman (1992), p. 438

“The scale of light can be described by numbers — called the frequency — and as the numbers get higher, the light goes from red to blue to ultraviolet. We can't see ultraviolet light, but it can affect photographic plates. It's still light — only the number is different.”

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Richard Feynman książka QED: The Strange Theory of Light and Matter

Źródło: QED: The Strange Theory of Light and Matter (1985), p. 13

“For those who want some proof that physicists are human, the proof is in the idiocy of all the different units which they use for measuring energy.”

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Richard Feynman książka The Character of Physical Law

Źródło: The Character of Physical Law (1965), chapter 3, “The Great Conservation Principles,” p. 75

“The first one has to do with whether a man knows what he is talking about, whether what he says has some basis or not. And my trick that I use is very easy. If you ask him intelligent questions — that is, penetrating, interested, honest, frank, direct questions on the subject, and no trick questions — then he quickly gets stuck. It is like a child asking naive questions. If you ask naive but relevant questions, then almost immediately the person doesn't know the answer, if he is an honest man.”

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Richard Feynman książka The Meaning of It All

lecture III: "This Unscientific Age"
The Meaning of It All (1999)

“If we are to replace standard numerical probability usage with engineering judgment, why do we find such an enormous disparity between the management estimate and the judgment of the engineers? It would appear that, for whatever purpose, be it for internal or external consumption, the management of NASA exaggerates the reliability of its product, to the point of fantasy.”

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Richard Feynman

Rogers Commission Report (1986)

“It requires a much higher degree of imagination to understand the electromagnetic field than to understand invisible angels. … I speak of the E and B fields and wave my arms and you may imagine that I can see them … [but] I cannot really make a picture that is even nearly like the true waves.”

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Richard Feynman

volume II; lecture 20, "Solution of Maxwell's Equations in Free Space"; section 20-3, "Scientific imagination"; p. 20-9 to 20-10
The Feynman Lectures on Physics (1964)

“This is the key of modern science and is the beginning of the true understanding of nature. This idea. That to look at the things, to record the details, and to hope that in the information thus obtained, may lie a clue to one or another of a possible theoretical interpretation.”

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Richard Feynman książka The Character of Physical Law

Źródło: The Character of Physical Law (1965), chapter 1, “The Law of Gravitation,” p. 15: video http://www.youtube.com/watch?v=j3mhkYbznBk&t=12m45s

“I returned to civilization shortly after that and went to Cornell to teach, and my first impression was a very strange one. I can't understand it any more, but I felt very strongly then. I sat in a restaurant in New York, for example, and I looked out at the buildings and I began to think, you know, about how much the radius of the Hiroshima bomb damage was and so forth… How far from here was 34th street?… All those buildings, all smashed — and so on. And I would go along and I would see people building a bridge, or they'd be making a new road, and I thought, they're crazy, they just don't understand, they don't understand. Why are they making new things? It's so useless. But, fortunately, it's been useless for almost forty years now, hasn't it? So I've been wrong about it being useless making bridges and I'm glad those other people had the sense to go ahead.”

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Richard Feynman

On his emotional reaction after the first uses of the atomic bomb.
Part 3: "Feynman, The Bomb, and the Military", "Los Alamos from Below", p. 136
Surely You're Joking, Mr. Feynman! (1985)

“[John] von Neumann gave me an interesting idea: that you don't have to be responsible for the world that you're in. So I have developed a very powerful sense of social irresponsibility as a result of von Neumann's advice. It's made me a very happy man ever since. But it was von Neumann who put the seed in that grew into my active irresponsibility!”

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Richard Feynman

Part 3: "Feynman, The Bomb, and the Military", "Los Alamos from Below", p. 132
Surely You're Joking, Mr. Feynman! (1985)

“Each piece, or part, of the whole of nature is always merely an approximation to the complete truth, or the complete truth so far as we know it. In fact, everything we know is only some kind of approximation, because we know that we do not know all the laws as yet. Therefore, things must be learned only to be unlearned again or, more likely, to be corrected. … The test of all knowledge is experiment. Experiment is the sole judge of scientific “truth.””

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Richard Feynman

volume I; lecture 1, "Atoms in Motion"; section 1-1, "Introduction"; p. 1-1
The Feynman Lectures on Physics (1964)

“There are those who are going to be disappointed when no life is found on other planets. Not I — I want to be reminded and delighted and surprised once again, through interplanetary exploration, with the infinite variety and novelty of phenomena that can be generated from such simple principles. The test of science is its ability to predict. Had you never visited the earth, could you predict the thunderstorms, the volcanoes, the ocean waves, the auroras, and the colorful sunset? A salutary lesson it will be when we learn of all that goes on on each of those dead planets — those eight or ten balls, each agglomerated from the same dust cloud and each obeying exactly the same laws of physics.”

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Richard Feynman

volume II; lecture 41, "The Flow of Wet Water"; section 41-6, "Couette flow"; p. 41-12
The Feynman Lectures on Physics (1964)

“This conference was worse than a Rorschach test: There's a meaningless inkblot, and the others ask you what you think you see, but when you tell them, they start arguing with you!”

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Richard Feynman

Part 5: "The World of One Physicist", "Is Electricity Fire?", p. 283
Surely You're Joking, Mr. Feynman! (1985)

“Physics is to mathematics what sex is to masturbation.”

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Richard Feynman

quoted in Lawrence M. Krauss, Fear of Physics: A Guide for the Perplexed (1993), p. 27

“I have to understand the world, you see.”

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Richard Feynman

Part 4: "From Cornell to Caltech, With A Touch of Brazil", "Certainly, Mr. Big!", p. 231
Surely You're Joking, Mr. Feynman! (1985)

“What do we mean by “understanding” something? We can imagine that this complicated array of moving things which constitutes “the world” is something like a great chess game being played by the gods, and we are observers of the game. We do not know what the rules of the game are; all we are allowed to do is to watch the playing. Of course, if we watch long enough, we may eventually catch on to a few of the rules. The rules of the game are what we mean by fundamental physics. Even if we knew every rule, however, we might not be able to understand why a particular move is made in the game, merely because it is too complicated and our minds are limited. If you play chess you must know that it is easy to learn all the rules, and yet it is often very hard to select the best move or to understand why a player moves as he does. So it is in nature, only much more so.”

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Richard Feynman

volume I; lecture 2, "Basic Physics"; section 2-1, "Introduction"; p. 2-1
The Feynman Lectures on Physics (1964)

“Jiry, don't worry about anything. Go out and have a good time.”

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Richard Feynman

Źródło: No Ordinary Genius (1994), p. 252, last words to his artist friend Jirayr Zorthian, as recalled by Zorthian in "No Ordinary Genius" (1993): video http://www.youtube.com/watch?v=Fzg1CU8t9nw&t=1h33m22s