“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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Source: A Short History of Nearly Everything (2003)
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Bill Bryson 112
American author 1951Related quotes

Variant: Memories were fine but you couldn't touch them, smell them or hold them. They were never exactly as the moment was, and they faded with time.

Einstein discussing the letter he sent Roosevelt raising the possibility of atomic weapons. from "Atom: Einstein, the Man Who Started It All," Newsweek Magazine (10 March 1947).
1940s
Review of Voodoo Planet: Solar Queen, book 3 by Andre Norton http://jamesdavisnicoll.com/review/oh-andre-norton-no, 2015
2010s

The Reader's Digest (1964) Vol. 84; also quoted in Structure and Plan (1974) by Glen A. Love, p. 154

The Other World (1657)
Context: You will say, 'How can chance assemble in one place all the things necessary to produce an oak tree?' My answer is that it would be no miracle if the matter thus arranged had not formed an oak. But it would have been a very great miracle if, once the matter was thus arranged, an oak had not been formed. A few less of some shapes, and it would have been an elm, a poplar, a willow, an elder, heather or moss. A little more of some other shapes and it might have been a sensitive plant, an oyster in its shell, a worm, a fly, a frog, a sparrow, an ape or a man.

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

From the Postcrip to 'The restless universe' (1951), pp. 225-226
Physics in my generation (1956)
Context: The dance of atoms, electrons and nuclei, which in all its fury is subject to God's eternal laws, has been entangled with another restless Universe which may well be the Devil's: the human struggle for power and domination, which eventually becomes history. My optimistic enthusiasm about the disinterested search for truth has been severely shaken. I wonder at my simplemindedness when I re-read what I said on the modern fulfilment of the alchemists dream: "Now however, the motive is not the lust for gold, cloaked by the mystery of magic arts, but the scientists' pure curiosity. For it is clear from the beginning that we may not expect wealth too." Gold means power, power to rule and to have a big share in the riches of this world. Modern alchemy is even a short-cut to this end, it provides power directly; a power to dominate and to threaten and hurt on a scale never heard of before. And this power we have actually seen displayed in ruthless acts of warfare, in the devastation of whole cities and the destruction of their population.