“Nothing can be truly replicated. Not a love, not a jewel, not a single line.”

Source: Where We Belong

http://nick.brown.free.fr/stapel/ From the authorized english translation by Nicholas J.L. Brown available as a free download in PDF format
Clearly, there was something in the recipe for the X effect that I was missing. But what? I decided to ask the experts, the people who’d found the X effect and published lots of articles about it [..] My colleagues from around the world sent me piles of instructions, questionnaires, papers, and software [..] In most of the packages there was a letter, or sometimes a yellow Post-It note stuck to the bundle of documents, with extra instructions: “Don’t do this test on a computer. We tried that and it doesn’t work. It only works if you use pencil-and-paper forms.” “This experiment only works if you use ‘friendly’ or ‘nice’. It doesn’t work with ‘cool’ or ‘pleasant’ or ‘fine’. I don’t know why.” “After they’ve read the newspaper article, give the participants something else to do for three minutes. No more, no less. Three minutes, otherwise it doesn’t work.” “This questionnaire only works if you administer it to groups of three to five people. No more than that.” I certainly hadn’t encountered these kinds of instructions and warnings in the articles and research reports that I’d been reading. This advice was informal, almost under-the-counter, but it seemed to be a necessary part of developing a successful experiment. Had all the effect X researchers deliberately omitted this sort of detail when they wrote up their work for publication? I don’t know.
From his memoirs: "Ontsporing" (English, "Derailment") Nov. 2012

Source: Safe Haven

Source: The Selfish Gene

Source: My Movie Business: A Memoir

How to Read a Poem And Fall in Love with Poetry (1998)

pg 10
Variant: Metaphors are not to be trifled with. A single metaphor can give birth to love.
Source: The Unbearable Lightness of Being (1984), Part One: Lightness and Weight

As quoted by Karl Fink, Geschichte der Elementar-Mathematik (1890) translated as A Brief History of Mathematics https://books.google.com/books?id=3hkPAAAAIAAJ (1900, 1903) by Wooster Woodruff Beman, David Eugene Smith. Also see Carl Benjamin Boyer, A History of Mathematics (1968). <br class="br">Mysterium Cosmographicum (1596)

Source: Left to Tell: Discovering God Amidst the Rwandan Holocaust