Everything we call real is made of things that cannot be regarded as real.
Opposites are not contradictory but complementary.
An expert is a man who has made all the mistakes which can be made, in a narrow field.
Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it.
Prediction is very difficult, especially if it's about the future.
If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet.
Nothing exists until it is measured.
In the great drama of existence we are audience and actors at the same time.
When we measure something we are forcing an undetermined, undefined world to assume an experimental value. We are not measuring the world, we are creating it.
A deep truth is a truth so deep that not only is it true but it's exact opposite is also true.
No paradox, no progress.
I go into the Upanishads to ask questions.
A physicist visits a colleague and notices a horseshoe hanging on the wall above the entrance. 'Do you really believe that a horseshoe brings luck?' he asks. 'No,' replies the colleague, 'but I've been told that it works even if you don't believe in it.'
A physicist is just an atom's way of looking at itself.
If you think you understand it, that only shows that you don't know the first thing about it.
Every valuable human being must be a radical and a rebel, for what he must aim at is to make things better than they are.
The meaning of life consists in the fact that it makes no sense to say that life has no meaning.
The best weapon of a dictatorship is secrecy, but the best weapon of a democracy should be the weapon of openness.
Never express yourself more clearly than you are able to think.
There are some things so serious you have to laugh at them.
If an idea does not appear bizarre, there is no hope for it.
We are trapped by language to such a degree that every attempt to formulate insight is a play on words.
Our task is not to penetrate the essence of things, the meaning of which we do not know anyway, but rather to develop concepts which allow us to talk in a productive way about phenomena in nature
One must always do what one really cannot.
If we couldn't laugh at ourselves, that would be the end of everything.
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