“If, in some cataclysm, all of scientific knowledge were to be destroyed, and only one sentence passed on to the next generation of creatures, what statement would contain the most information in the fewest words? I believe it is the atomic hypothesis (or the atomic fact, or whatever you wish to call it) that all things are made of atoms — little particles that move around in perpetual motion, attracting each other when they are a little distance apart, but repelling upon being squeezed into one another. In that one sentence, you will see, there is an enormous amount of information about the world, if just a little imagination and thinking are applied.”

— Richard Feynman

volume I; lecture 1, "Atoms in Motion"; section 1-2, "Matter is made of atoms"; p. 1-2
The Feynman Lectures on Physics (1964)

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Richard Feynman 181

American theoretical physicist 1918–1988

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“The reason that I call my doctrine logical atomism is because the atoms that I wish to arrive at as the sort of last residue in analysis are logical atoms and not physical atoms. Some of them will be what I call "particulars" – such things as little patches of color or sounds, momentary things – and some of them will be predicates or relations and so on.”

Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist

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“In 1925 Heisenberg made a new attempt, on entirely novel lines, to obtain an explanation of atomic spectra. Working in collaboration with Bohr, he had come to the conclusion that the imperfections of Bohr's theory had been a consequence of assuming too simple a model for the atom. For Bohr had not only assumed that the atom consisted of particles moving through space and time, but also that the particles inside atoms were of the same kind as the electrons outside atoms.”

James Jeans (1877–1946) British mathematician and astronomer

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“It is a slightly arresting notion that if you were to pick yourself apart with tweezers, one atom at a time, you would produce a mound of fine atomic dust, none of which had ever been alive but all of which had once been you.”

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“The atom has taught me that the little things do count — most.”

Sri Chinmoy (1931–2007) Indian writer and guru

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“[T]he atoms or elementary particles themselves are not real; they form a world of potentialities or possibilities rather than one of things or facts.”

Werner Heisenberg (1901–1976) German theoretical physicist

“Let’s instead define life very broadly, simply as a process that can retain its complexity and replicate. What’s replicated isn’t matter (made of atoms) but information (made of bits) specifying how the atoms are arranged. When a bacterium makes a copy of its DNA, no new atoms are created, but a new set of atoms are arranged in the same pattern as the original, thereby copying the information. In other words, we can think of life as a self-replicating information-processing system whose information (software) determines both its behavior and the blueprints for its hardware.”

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“What about the orbiting of the so-called electrons around their central nucleus? What has really been observed unequivocally? Nothing of the moving particle; what has rather been observed are phenomena which at first glance have nothing to do at all with the motion of bodies. Everything else that leads to the atomic model, is a long chain of inferences.”

Felix Ehrenhaft (1879–1952) Austrian physicist

Wie steht es bei dem Kreisen der sogenannten Elektronen um ihren zentralen Kern? Was ist hier wirklich unmittelbar wahrgenommen worden? Nichts von den bewegten Teilchen; was vielmehr beobachtet wurde, sind Erscheinungen, welche auf den ersten Blick mit der Bewegung von Körpern gar nichts zu tun haben. Alles übrige, was zum Atommodell geführt, ist eine lange Kette von Schlüssen.
In an address to the Viennese Chemisch-Physikalische Gesellschaft http://www.cpg.univie.ac.at/, April 26, 1932, as quoted by [Joseph Braunbeck, Der andere Physiker: das Leben von Felix Ehrenhaft, Leykam Buchverlagsgesellschaft, 2003, 3701174709, 51]

“Scientists say that human beings are made of atoms, but a little bird told me that we are also made of stories.”

Eduardo Galeano (1940–2015) Uruguayan writer

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“A solid stores energy in the vibrations of the atoms about their equilibrium positions. In the simplest approximation, which Einstein considered, each atom vibrates with the same frequency, ν, in each of three dimensions, so a solid containing N atoms can be thought of as 3N one-dimensional simple harmonic oscillators.”

Jim Peebles (1935) Canadian-American astronomer

[Quantum Mechanics, 1992, Princeton University Press, 11, https://books.google.com/books?id=hTaw4Ht4Vi8C&pg=PA11]

“The inconsistency of first explaining matter by atoms and then explaining atoms by matter was only slowly realised, and it is only comparatively recently that we have come to see that there is nothing paradoxical in the fact that an atom or an electron, which are not matter, may have properties different from those of matter, and must be allowed to do things that a material particle could not do.”

Willem de Sitter (1872–1934) Dutch cosmologist

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