If we have an atom that is in an excited state and so is going to emit a photon, we cannot say when it will emit the photon. It has a certain amplitude to emit the photon at any time, and we can predict only a probability for emission; we cannot predict the future exactly.


Richard P. Feynman

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When I tried to show him how an electromagnet works by making a little coil of wire and hanging a na...
RICHARD FEYNMAN
innovation is a very difficult thing in the real world
RICHARD FEYNMAN
I don’t know what’s the matter with people: they don’t learn by understanding; they learn by s...
RICHARD FEYNMAN
That’s the trouble with not being in your own field: You don’t take it seriously.
RICHARD FEYNMAN
The first principle is that you must not fool yourself—and you are the easiest person to fool. So ...
RICHARD FEYNMAN
You have to have absolute confidence. Keep right on going, and nothing will happen.
RICHARD FEYNMAN
There was a Princess Somebody of Denmark sitting at a table with a number of people around her, and ...
RICHARD FEYNMAN
You see, I get so much fun out of thinking that I don’t want to destroy this pleasant machine that...
RICHARD FEYNMAN
I always do that, get into something and see how far I can go.
RICHARD FEYNMAN
Learn what the rest of the world is like. The variety is worthwhile.
RICHARD FEYNMAN
My father had the spirit and integrity of a scientist, but he was a salesman. I remember asking him ...
RICHARD FEYNMAN
I wanted very much to learn to draw, for a reason that I kept to myself: I wanted to convey an emoti...
RICHARD FEYNMAN
I learned from her that every woman is worried
about her looks, no matter how beautiful she is.
RICHARD FEYNMAN
– and pompous fools drive me up the wall. Ordinary fools are alright; you can talk to them and try...
RICHARD FEYNMAN
What Do You Care What Other People Think?
RICHARD FEYNMAN
Of course, you only live one life, and you make all your mistakes, and learn what not to do, and tha...
RICHARD FEYNMAN
All the time you're saying to yourself, 'I could do that, but I won't,' — which is just another wa...
RICHARD FEYNMAN
The next question was — what makes planets go around the sun? At the time of Kepler some people an...
RICHARD FEYNMAN
So my antagonist said, "Is it impossible that there are flying saucers? Can you prove that it's impo...
RICHARD FEYNMAN
Science is what we have learned about how to keep from fooling ourselves.
RICHARD FEYNMAN
A poet once said, 'The whole universe is in a glass of wine.' We will probably never know in what se...
RICHARD FEYNMAN
Fall in love with some activity, and do it! Nobody ever figures out what life is all about, and it d...
RICHARD FEYNMAN
The highest forms of understanding we can achieve are laughter and human compassion.
RICHARD FEYNMAN
Science is like sex: sometimes something useful comes out, but that is not the reason we are doing i...
RICHARD FEYNMAN
There is nothing that living things do that cannot be understood from the point of view that they ar...
RICHARD FEYNMAN
I was terrible in English. I couldn't stand the subject. It seemed to me ridiculous to worry about w...
RICHARD FEYNMAN
Mathematics is a language plus reasoning; it is like a language plus logic. Mathematics is a tool fo...
RICHARD FEYNMAN
If someone were to propose that the planets go around the sun because all planet matter has a kind o...
RICHARD FEYNMAN
All television is children's television.
RICHARD P. ADLER
You can only stumble if you are moving.
RICHARD P. CARLTON
The great thing about writing fiction is that you can do whatever the fuck you want, go as far as yo...
RICHARD P. DENNEY
A book series is never truly over. The story lives on, even when the final page has been turned.
RICHARD P. DENNEY
Interestingly, the patients who presented to me self-diagnosed [with Dissociative Identity Disorder ...
RICHARD P. KLUFT
The summary of Lambert and Lillenfelt’s “Bloodstains” in Scientific American Mind in the Octob...
RICHARD P. KLUFT
It is clear that the Vatican does not know what a theologian is and what a university is.
RICHARD P. MCBRIEN
As a practising lawyer, I was mediocre, but I worked hard as a law officer of the state government a...
P. SATHASIVAM
If you go back to any period in India's history, all the hard decisions this country had to take...
P. CHIDAMBARAM
I have maintained that the people of India are ahead of their governments. The people of India are a...
P. CHIDAMBARAM
When I came back to India after Harvard Business School, I started as a lawyer and as a trade union ...
P. CHIDAMBARAM
Let me tell you, very frankly, when I went to the Harvard Business School I was more or less a commi...
P. CHIDAMBARAM