Niels Bohr — "No, no, you're not thinking; you're just being logical."
No, no, you're not thinking; you're just being logical.
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More from Niels Bohr
"The very act of observing disturbs the system."
"The great lesson of quantum theory is that there is no deep reality."
"The atom is not a mechanical system, but a system of relationships."
"We are suspended in language. Our task is to communicate experience and ideas to others. We constantly have to be aware of the fact that we are suspended in language."
"If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet."
Details
Attributed to Bohr by physicists like Victor Weisskopf, used during discussions on quantum mechanics.
Date: Approx. 1920s-1930s
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Understanding this quote
What it means
Real thinking is not the same as following logical rules step by step. You can reason correctly from your assumptions and still miss the truth because your assumptions themselves are wrong or too narrow. Genuine thought requires imagination, willingness to hold contradictions, and the courage to question the categories you are using. Logic only rearranges what you already accept; thinking breaks the frame and sees the problem in a new way.
Relevance to Niels Bohr
Bohr built his atomic model by accepting ideas that looked logically impossible, like electrons jumping between orbits without crossing the space between. His principle of complementarity said light and matter are both wave and particle, a claim strict logic rejects. He pushed students, including Heisenberg and Pauli, past tidy derivations toward paradox. This remark, reportedly aimed at a young colleague, captures how he separated deep physical intuition from mere deductive correctness.
The era
Bohr worked from the 1910s through the 1950s, when classical physics was collapsing under quantum evidence. Newtonian logic could not explain blackbody radiation, spectral lines, or radioactivity. At his Copenhagen institute, physicists argued fiercely about measurement, probability, and reality itself, while Einstein resisted the new framework. World War II then forced these same thinkers into the atomic bomb project. The era rewarded minds willing to abandon common-sense logic for stranger, truer descriptions of nature.
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