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“In my own field, x-ray crystallography, we used to work out the structure of minerals by various dodges which we never bothered to write down, we just used them. Then Linus Pauling came along to the laboratory, saw what we were doing and wrote out what we now call Pauling's Rules. We had all been using Pauling's Rules for about three or four years before Pauling told us what the rules were.”
― J.D. Bernal, The extension of man: A history of physics before 1900

“Pauling was shocked by the freedom with which the X-ray crystallographers of the time, including particularly Astbury, played with the intimate chemical structure of their models. They seemed to think that if the atoms were arranged in the right order and about the right distance apart, that was all that mattered, that no further restrictions need to be put on them.”
― J.D. Bernal

“When a student asked Linus Pauling how he got a good idea, the double Nobel Prize winner answered: 'You have a lot of ideas and you throw away the bad ones.' Francis Crick, co-discoverer of the molecular structure of DNA, said that 'theorists in biology should realize that it is ... unlikely that they will produce a good theory at their first attempt. It is amateurs who have one big bright idea beautiful idea that they can never abandon. Professionals know that they have to produce theory after theory before they are likely to hit the jackpot.”
― Robert Aunger, The Electric Meme: A New Theory of How We Think