What we observe is not nature itself, but nature exposed to our method of questioning.
Interpretation
This quote emphasizes that our understanding of nature is shaped by the questions we ask and how we investigate it.
Heisenberg suggests that our perceptions of the natural world are not direct reflections of reality but are instead influenced by our inquiries and the frameworks we use to interpret observations. The statement implies that knowledge is not just about passive observation; rather, it is an active process that depends heavily on human curiosity and the methodologies employed in scientific exploration.
In practice
In a lecture on scientific methodology, one could use this quote to illustrate the importance of asking the right questions in research.
Although the theory of relativity makes the greatest of demands on the ability for abstract thought, still it fulfills the traditional requirements of science insofar as it permits a division of the world into subject and object (observer and observed) and, hence, a clear formulation of the law of causality.
It was about three o'clock at night when the final result of the calculation [which gave birth to quantum mechanics] lay before me ... At first I was deeply shaken ... I was so excited that I could not think of sleep. So I left the house ... and awaited the sunrise on top of a rock.
It is generally believed that our science is empirical and that we draw our concepts and our mathematical constructs from the empirical data. If this were the whole truth, we should, when entering into a new field, introduce only such quantities as can directly be observed, and formulate natural laws only by means of these quantities.
When I meet God, I am going to ask him two questions: Why relativity ? And why turbulence ? I really believe he will have an answer for the first.
The end of the First World War had thrown Germany's youth into great turmoil. The reins of power had fallen from the hands of a deeply disillusioned older generation, and the younger ones drew together in larger and smaller groups to blaze new paths or, at least, to discover a new star to steer by.
The Same organizing forces that have shaped nature in all her forms are also responsible for the structure of our minds.
To have lost is less disturbing than to wonder if we may possibly have won; and Eustacia could now, like other people at such a stage, take a standing-point outside herself, observe herself as a disinterested spectator, and think what a sport for Heaven this woman Eustacia was.
Laws alone can not secure freedom of expression; in order that every man present his views without penalty there must be spirit of tolerance in the entire population.
Secrecy is thus, so to speak, a transition stadium between being and not-being.
The outward work can never be small if the inward one is great, and the outward work can never be great or good if the inward is small or of little worth.
Man is least himself when he talks in his own person. Give him a mask, and he will tell you the truth.
Only great souls know the grandeur there is in charity.
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