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“What are the three most important rules of the chemist?"

This I knew from Ben. "Label clearly. Measure twice. Eat elsewhere.”
― Patrick Rothfuss, The Name of the Wind

“On Titan the molecules that have been raining down like manna from heaven for the last 4 billion years might still be there largely unaltered deep-frozen awaiting the chemists from Earth”
― Carl Sagan, Pale Blue Dot: A Vision of the Human Future in Space

“The chemists are a strange class of mortals, impelled by an almost insane impulse to seek their pleasures amid smoke and vapour, soot and flame, poisons and poverty; yet among all these evils I seem to live so sweetly that may I die if I were to change places with the Persian king.”
― Johann Joachim Becher

“The chemists who uphold dualism are far from being agreed among themselves; nevertheless, all of them in maintaining their opinion, rely upon the phenomena of chemical reactions. For a long time the uncertainty of this method has been pointed out: it has been shown repeatedly, that the atoms put into movement during a reaction take at that time a new arrangement, and that it is impossible to deduce the old arrangement from the new one. It is as if, in the middle of a game of chess, after the disarrangement of all the pieces, one of the players should wish, from the inspection of the new place occupied by each piece, to determine that which it originally occupied.”
― Auguste Laurent, Chemical Method, Notation, Classification, & Nomenclaturi

“Had she not been an immigrant, she might have enjoyed being a mom. 'Raising you took half my life,' she would say. 'You're living proof of where that half of my life went.' Chemists know this already. All elements on the periodic table decay. And in one half life, half the original element, called the parent nucleus, decays to a different element, for the daughter nucleus. No son nucleus, of course. No son could ever be a by-product of radioactive decay.”
― Weike Wang, Joan Is Okay