Those who are not shocked when they first come across quantum theory cannot possibly have understood it.
God does not play dice [with the universe]. [Ger., Gott wurfelt nicht.]
I think I can safely say that nobody understands Quantum Mechanics.
It is wrong to think that the task of physics is to find out how nature is. Physics concerns what we say about nature.
If anybody says he can think about quantum physics without getting giddy, that only shows he has not understood the first thing about them.
You know how it always is, every new idea, it takes a generation or two until it becomes obvious that there's no real problem. It has not yet become obvious to me that there's no real problem. I cannot define the real problem, therefore I suspect there's no real problem, but I'm not sure there's no real problem.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
There was a time when the newspapers said that only twelve men understood the theory of relativity. I do not believe there ever was such a time ... On the other hand, I think I can safely say that nobody understands quantum mechanics.
I like to think the moon is there even if I am not looking at it.
As far as the laws of mathematics refer to reality, they are not certain, and as far as they are certain, they do not refer to reality.
Everything we call real is made of things that cannot be regarded as real.
God is subtle but he is not malicious.
If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet.
I am going to tell you what nature behaves like. If you will simply admit that maybe she does behave like this, you will find her a delightful, entrancing thing. Do not keep saying to yourself, if you can possibly avoid it, 'But how can it be like that?' ...Nobody knows how it can be like that.
It is often stated that of all the theories proposed in this century, the silliest is quantum theory. In fact, some say that the only thing that quantum theory has going for it is that it is unquestionably correct.
Quantum physics thus reveals a basic oneness of the universe.
I don't like it, and I'm sorry I ever had anything to do with it.
A philosopher once said, 'It is necessary for the very existence of science that the same conditions always produce the same results.' Well, they don't!
The "paradox" is only a conflict between reality and your feeling of what reality "ought to be."
Quantum mechanics makes absolutely no sense.
or simply: