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.
I would do what I pleased, and doing what I pleased, I should have my will, and having my will, I should be contented; and when one is contented, there is no more to be desired; and when there is no more to be desired, there is an end of it.
It is thus that the few rare lucid well-disposed people who have had to struggle on the earth find themselves at certain hours of the day or night in the depth of certain authentic and waking nightmare states, surrounded by the formidable suction, the formidable oppression of a kind of civic magic which will soon be seen appearing openly in social behavior.
Can any man or woman choose duties? No more than they can choose their birthplace or their father and mother.
The only theism worthy of our respect believes in God not because of the way the world is made but in spite of that. The only theism that is no less profound than the Buddha's atheism is that represented in the Bible by Job and Jeremiah.
According to Buddhist practice, there are three stages or steps. The initial stage is to reduce attachment towards life. The second stage is the elimination of desire and attachment to this samsara. Then in the third stage, self-cherishing is eliminated
Fear of things invisible is the natural seed of that which everyone in himself calleth religion.
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