Quotes by Werner Heisenberg

"The uncertainty principle refers to the degree of indeterminateness in the possible present knowledge of the simultaneous values of various quantities with which the quantum theory deals; it does not restrict, for example, the exactness of a position measurement alone or a velocity measurement alone."

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"Natural science, does not simply describe and explain nature; it is part of the interplay between nature and ourselves."

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"What we observe is not nature itself, but nature exposed to our method of questioning."

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