“Mathematics is not a science from our point of view, in the sense that it is not a natural science. The test… — Richard P. Feynman Copy Share Image
The present situation in physics is as if we know chess, but we don't know one or two rules. — Richard P. Feynman Copy Share Image
We scientists are clever — too clever — are you not satisfied? Is four square miles in one bomb not enough? Men… — Richard P. Feynman Copy Share Image
“THE QUESTION IS, OF COURSE, IS IT GOING TO BE POSSIBLE TO AMALGAMATE EVERYTHING, AND MERELY DISCOVER THAT THIS WORLD REPRESENTS DIFFERENT… — Richard P. Feynman Copy Share Image
It is scientific only to say what is more likely and what less likely, and not to be proving all the time… — Richard P. Feynman Copy Share Image
Scientific knowledge is a body of statements of varying degrees of certainty -- some most unsure, some nearly sure, none absolutely certain. — Richard P. Feynman Copy Share Image
That is the logical tight-rope on which we have to walk if we wish to interpret nature. — Richard P. Feynman Copy Share Image
To guess what to keep and what to throw away takes considerable skill. Actually it is probably merely a matter of luck,… — Richard P. Feynman Copy Share Image
Scientific views end in awe and mystery, lost at the edge in uncertainty, but they appear to be so deep and so… — Richard P. Feynman Copy Share Image
If I say [electrons] behave like particles I give the wrong impression; also if I say they behave like waves. They behave… — Richard P. Feynman Copy Share Image
What I am going to tell you about is what we teach our physics students in the third or fourth year of… — Richard P. Feynman Copy Share Image
It is always good to know which ideas cannot be checked directly, but it is not necessary to remove them all. It… — Richard P. Feynman Copy Share Image
Our freedom to doubt was born out of a struggle against authority in the early days of science. It was a very… — Richard P. Feynman Copy Share Image
Computer science is not as old as physics; it lags by a couple of hundred years. However, this does not mean that… — Richard P. Feynman Copy Share Image
Unless a thing can be defined by measurement, it has no place in a theory. And since an accurate value of the… — Richard P. Feynman Copy Share Image
It does not make any difference how beautiful your guess is. It does not make any difference how smart you are, who… — Richard P. Feynman Copy Share Image
“[Doubt] is not a new idea; this is the idea of the age of reason. This is the philosophy that guided the… — Richard P. Feynman Copy Share Image
“I have a friend who's an artist and has sometimes taken a view which I don't agree with very well. He'll hold… — Richard P. Feynman Copy Share Image
“I believe that we must attack these things in which we do not believe. Not attack by the method of cutting off… — Richard P. Feynman Copy Share Image
The other thing that gives a scientific man the creeps in the world today are the methods of choosing leaders - in… — Richard P. Feynman Copy Share Image
“If someone were to propose that the planets go around the sun because all planet matter has a kind of tendency for… — Richard P. Feynman Copy Share Image
You should not fool the laymen when you're talking as a scientist... . I'm talking about a specific, extra type of integrity… — Richard P. Feynman Copy Share Image
We've learned from experience that the truth will come out. Other experimenters will repeat your experiment and find out whether you were… — Richard P. Feynman Copy Share Image
'Conservation' (the conservation law) means this ... that there is a number, which you can calculate, at one moment-and as nature undergoes… — Richard P. Feynman Copy Share Image
Science alone of all the subjects contains within itself the lesson of the danger of belief in the infallibility of the greatest… — Richard P. Feynman Copy Share Image
Before I was born, my father told my mother, 'If it's a boy, he's going to be a scientist.' — Richard P. Feynman Copy Share Image
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled. — Richard P. Feynman Copy Share Image
It is not unscientific to make a guess, although many people who are not in science think it is. — Richard P. Feynman Copy Share Image
Doubt is clearly a value in science. It is important to doubt and that the doubt is not a fearful thing, but… — Richard P. Feynman Copy Share Image
There are all kinds of interesting questions that come from a knowledge of science, which only adds to the excitement and mystery… — Richard P. Feynman Copy Share Image
Poets say science takes away from the beauty of the stars - mere globs of gas atoms. I, too, can see the… — Richard P. Feynman Copy Share Image
“You know, the most amazing thing happened to me tonight... I saw a car with the license plate ARW 357. Can you… — Richard P. Feynman Copy Share Image
“Philosophers have said before that one of the fundamental requisites of science is that whenever you set up the same conditions, the… — Richard P. Feynman Copy Share Image
... it is impossible to explain honestly the beauties of the laws of nature in a way that people can feel, without… — Richard P. Feynman Copy Share Image
I do believe that there is a conflict between science and religion ... the spirit or attitude toward the facts is different… — Richard P. Feynman Copy Share Image
If you keep proving stuff that others have done, getting confidence, increasing the complexities of your solutions - for the fun of… — Richard P. Feynman Copy Share Image
The situation in the sciences is this: A concept or an idea which cannot be measured or cannot be referred directly to… — Richard P. Feynman Copy Share Image
This is the key of modern science and is the beginning of the true understanding of nature. This idea. That to look… — Richard P. Feynman Copy Share Image
It is the facts that matter, not the proofs. Physics can progress without the proofs, but we can't go on without the… — Richard P. Feynman Copy Share Image
The most obvious characteristic of science is its application: the fact that, as a consequence of science, one has a power to… — Richard P. Feynman Copy Share Image
“Philosophers have said before that one of the fundamental requisites of science is that whenever you set up the same conditions, the same thing… — Richard P. Feynman Copy Share Image
My rule is, when you are unhappy, think about it. But when you're happy, don't. Why spoil it? You're probably happy for some ridiculous… — Richard P. Feynman Copy Share Image
Trying to understand the way nature works involves a most terrible test of human reasoning ability. It involves subtle trickery, beautiful tightropes of logic… — Richard P. Feynman Copy Share Image
Mathematics is a language plus reasoning; it is like a language plus logic. Mathematics is a tool for reasoning. — Richard P. Feynman Copy Share Image
It is necessary for the very existence of science that minds exist which do not allow that nature must satisfy some preconceived conditions. — Richard P. Feynman Copy Share Image
“There was a Princess Somebody of Denmark sitting at a table with a number of people around her, and I saw an empty chair… — Richard P. Feynman Copy Share Image
All the time you're saying to yourself, 'I could do that, but I won't,'--which is just another way of saying that you can't. — Richard P. Feynman Copy Share Image
“There's a big difference between knowing the name of something and knowing something.” — Richard P. Feynman Copy Share Image
The fact that you are not sure means that it is possible that there is another way someday. — Richard P. Feynman Copy Share Image
One cannot understand... the universality of laws of nature, the relationship of things, without an understanding of mathematics. There is no other way to… — Richard P. Feynman Copy Share Image