This is not very important what I'm doing. I'm just proving something. — 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
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
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
“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 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
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
If we will only allow that, as we progress, we remain unsure, we will leave opportunities for alternatives. — 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… — Richard P. Feynman Copy Share Image
When a scientist doesn't know the answer to a problem, he is ignorant. When he has a hunch as to what the… — 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
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
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
“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
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
“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
“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
“[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
No government has the right to decide on the truth of scientific principles, nor to prescribe in any way the character of… — Richard P. Feynman Copy Share Image
All things are made of atoms - little particles that move around in perpetual motion, attracting each other when they are a… — 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 a scientist looking at nonscientific problems is just as dumb as the next guy. — Richard P. Feynman Copy Share Image
A philosopher once said, 'It is necessary for the very existence of science that the same conditions always produce the same results.'… — Richard P. Feynman Copy Share Image
The fundamental principle of science, the definition almost, is this: the sole test of the validity of any idea is experiment. — Richard P. Feynman Copy Share Image
“I can live with doubt and uncertainty and not knowing. I think it's much more interesting to live not knowing than to… — Richard P. Feynman Copy Share Image
“I have no responsibility to live up to what others expect of me. That's their mistake, not my failing.” — Richard P. Feynman Copy Share Image
If there is something very slightly wrong in our definition of the theories, then the full mathematical rigor may convert these errors… — Richard P. Feynman Copy Share Image
There is no harm in doubt and skepticism, for it is through these that new discoveries are made. — Richard P. Feynman Copy Share Image
Science is like sex: sometimes something useful comes out, but that is not the reason we are doing it — Richard P. Feynman Copy Share Image
The ideas associated with the problems of the development of science, as far as I can see by looking around me, are… — Richard P. Feynman Copy Share Image
The theoretical broadening which comes from having many humanities subjects on the campus is offset by the general dopiness of the people… — Richard P. Feynman Copy Share Image
To decide upon the answer is not scientific. In order to make progress, one must leave the door to the unknown ajar… — Richard P. Feynman Copy Share Image
The test of all knowledge is experiment. Experiment is the sole judge of scientific truth. — Richard P. Feynman Copy Share Image
I think it's much more interesting to live not knowing than to have answers which might be wrong. — 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
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
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
Mathematics is a language plus reasoning; it is like a language plus logic. Mathematics is a tool for reasoning. — Richard P. Feynman Copy Share
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
“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
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
“There's a big difference between knowing the name of something and knowing something.” — Richard P. Feynman Copy Share
The fact that you are not sure means that it is possible that there is another way someday. — Richard P. Feynman Copy Share
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
Mathematics is not just a language. Mathematics is a language plus reasoning. — Richard P. Feynman Copy Share
A poet once said, "The whole universe is in a glass of wine." We will probably never know in what sense he meant that,… — Richard P. Feynman Copy Share
I was a very shy character, always feeling uncomfortable because everybody was stronger than I, and always afraid I would look like a sissy.… — Richard P. Feynman Copy Share