If you think you understand quantum mechanics, you don't understand quantum mechanics. — Richard P. Feynman Copy Share Image
What would happen if we could arrange the atoms one by one the way we want them? — Richard P. Feynman Copy Share Image
The electron is a theory. But the theory is so good we can almost consider them real. — Richard P. Feynman Copy Share Image
You can’t say A is made of B or vice versa. All mass is interaction. — Richard P. Feynman Copy Share Image
Turbulence is the most important unsolved problem of classical physics. — Richard P. Feynman Copy Share Image
I think I can safely say that nobody understands Quantum Mechanics. — Richard P. Feynman Copy Share Image
I think we can safely assume that no one understands quantum mechanics. — Richard P. Feynman Copy Share Image
As you know, a theory in physics is not useful unless it is able to predict underlined effects which we would otherwise… — 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
As usual, nature's imagination far surpasses our own, as we have seen from the other theories which are subtle and deep. — Richard P. Feynman Copy Share Image
Physicists like to think that all you have to do is say, these are the conditions, now what happens next? — Richard P. Feynman Copy Share Image
There is one simplification at least. Electrons behave ... in exactly the same way as photons; they are both screwy, but in… — Richard P. Feynman Copy Share Image
From a long view of the history of mankind the most significant event of the nineteenth century will be judged as Maxwell's… — Richard P. Feynman Copy Share Image
It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it's… — Richard P. Feynman Copy Share Image
Atoms are very special: they like certain particular partners, certain particular directions, and so on. It is the job of physics to… — 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
Today, all physicists know from studying Einstein and Bohr that sometimes an idea which looks completely paradoxical at first, if analyzed 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
“No phenomenon directly involving a frequency has yet been detected above approximately 10^12 cycles per second. We only deduce the higher frequencies… — Richard P. Feynman Copy Share Image
The correct statement of the laws of physics involves some very unfamiliar ideas which require advanced mathematics for their description. Therefore, one… — Richard P. Feynman Copy Share Image
“The uncertainty principle “protects” quantum mechanics. Heisenberg recognized that if it were possible to measure the momentum and the position simultaneously with… — Richard P. Feynman Copy Share Image
It is a curious historical fact that modern quantum mechanics began with two quite different mathematical formulations: the differential equation of Schroedinger… — Richard P. Feynman Copy Share Image
Quarks came in a number of varieties - in fact, at first, only three were needed to explain all the hundreds of… — Richard P. Feynman Copy Share Image
Thus we can get the correct answer for the probability of partial reflection by imagining (falsely) that all reflection comes from only… — Richard P. Feynman Copy Share Image
One of the ways of stopping science would be only to do experiments in the region where you know the law. But… — Richard P. Feynman Copy Share Image
It is going to be necessary that everything that happens in a finite volume of space and time would have to be… — Richard P. Feynman Copy Share Image
“Are you looking for the ultimate laws of physics?" No, I'm not. I'm just looking to find out more about the world… — Richard P. Feynman Copy Share Image
It is to be emphasized that no matter how many [amplitude] arrows we draw, add, or multiply, our objective is to calculate… — 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
The chance is high that the truth lies in the fashionable direction. But, on the off-chance that it is in another direction… — Richard P. Feynman Copy Share Image
“there is a physical problem that is common to many fields, that is very old, and that has not been solved. It… — 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
“There is a most profound and beautiful question associated with the observed coupling constant, e - the amplitude for a real electron… — Richard P. Feynman Copy Share Image
All theoretical chemistry is really physics; and all theoretical chemists know it. — Richard P. Feynman Copy Share Image
Another thing I must point out is that you cannot prove a vague theory wrong. — Richard P. Feynman Copy Share Image
The electron is a theory we use; it is so useful in understanding the way nature works that we can almost call… — 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
We seem gradually to be groping toward an understanding of the world of subatomic particles, but we really do not know how… — 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
![“It is to be emphasized that no matter how many [amplitude] arrows we draw, add, or multiply, our objective is to calculate a single final arrow for the event . Mistakes are often made by physics students at first because they do not keep this important point in mind. They work for so long…” quote by Richard P. Feynman](https://sms4smile.com/quotes/i/94d/richard-p-feynman-495_add_it-is-to-be-emphasized-that-no-matter-ho_791144.jpg)
