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
If you think you understand quantum mechanics, you don't understand quantum mechanics. — 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
What would happen if we could arrange the atoms one by one the way we want them? — 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
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
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
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
The only way to have real success in science, the field I'm familiar with, is to describe the evidence very carefully without… — Richard P. Feynman Copy Share Image
Working out another system to replace Newton's laws took a long time because phenomena at the atomic level were quite strange. One… — Richard P. Feynman Copy Share Image
We get the exciting result that the total energy of the universe is zero. Why this should be so is one of… — Richard P. Feynman Copy Share Image
It always seems odd to me that the fundamental laws of physics, when discovered, can appear in so many different forms that… — Richard P. Feynman Copy Share Image
Things on a very small scale behave like nothing that you have any direct experience about. They do not behave like waves,… — Richard P. Feynman Copy Share Image
People are always asking for the latest developments in the unification of this theory with that theory, and they don't give us… — Richard P. Feynman Copy Share Image
Because the theory of quantum mechanics could explain all of chemistry and the various properties of substances, it was a tremendous success.… — Richard P. Feynman Copy Share Image
The first amazing fact about gravitation is that the ratio of inertial mass to gravitational mass is constant wherever we have checked… — 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
The shell game that we play ... is technically called 'renormalization'. But no matter how clever the word, it is still what… — 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 little distance… — Richard P. Feynman Copy Share Image
In fact, the science of thermodynamics began with an analysis, by the great engineer Sadi Carnot, of the problem of how to… — Richard P. Feynman Copy Share Image
From a long view of the history of mankind, seen from, say, ten thousand years from now, there can be little doubt… — Richard P. Feynman Copy Share Image
“The attempts to try to represent the electric field as the motion of some kind of gear wheels, or in terms of… — Richard P. Feynman Copy Share Image
To do any important work in physics a very good mathematical ability and aptitude are required. Some work in applications can be… — 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
“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
I think we can safely assume that no one understands quantum mechanics. — Richard P. Feynman Copy Share Image
I think I can safely say that nobody 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
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
“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
