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It will never be possible by pure reason to arrive at some absolute truth.

Werner Heisenberg

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Werner Heisenberg
Age: 74 †
Born: 1901
Born: December 5
Died: 1976
Died: February 1
Academic
Mathematician
Mountaineer
Non-Fiction Writer
Nuclear Physicist
Physicist
Theoretical Physicist
University Teacher
Kreisfreie Stadt Würzburg
Werner Karl Heisenberg
Heisenberg
Werner K. Heisenberg
Absolute
Pure
Possible
Lying
Spiritual
Truth
Reason
Arrive
Never
Absolutes

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Nature allows only experimental situations to occur which can be described within the framework of the formalism of quantum mechanics
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The Same organizing forces that have shaped nature in all her forms are also responsible for the structure of our minds.
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We will have to abandon the philosophy of Democritus and the concept of elementary particles. We should accept instead the concept of elementary symmetries.
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What we observe is not nature itself, but nature exposed to our method of questioning.
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There are things that are so serious that you can only joke about them.
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Even for the physicist the description in plain language will be a criterion of the degree of understanding that has been reached.
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In my paper the fact the XY was not equal to YX was very disagreeable to me. I felt this was the only point of difficulty in the whole scheme...and I was not able to solve it.
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By getting to smaller and smaller units, we do not come to fundamental or indivisible units. But we do come to a point where further division has no meaning.
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Every experiment destroys some of the knowledge of the system which was obtained by previous experiments.
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The more precise the measurement of position, the more imprecise the measurement of momentum, and vice versa.
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A consistent pursuit of classical physics forces a transformation in the very heart of that physics.
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Science clears the fields on which technology can build.
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...separation of the observer from the phenomenon to be observed is no longer possible.
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What we observe is not nature itself but nature exposed to our method of questioning. Our scientific work in physics consists in asking questions about nature in the language that we possess and trying to get an answer from experiment by the means that are at our disposal.
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The solution of the difficulty is that the two mental pictures which experiment lead us to form - the one of the particles, the other of the waves - are both incomplete and have only the validity of analogies which are accurate only in limiting cases.
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Nonsense. Space is blue and birds fly through it.
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The reality we can put into words is never reality itself.
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Thus, the more precisely the position is determined, the less precisely the momentum is known, and conversely.
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Every word or concept, clear as it may seem to be, has only a limited range of applicability.
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The violent reaction on the recent development of modern physics can only be understood when one realises that here the foundations of physics have started moving and that this motion has caused the feeling that the ground would be cut from science
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