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Quotation from Elements of Chemistry by Antoine Lavoisier
“We may lay it down as an incontestible axiom, that, in all the operations of art and nature, nothing is created; an equal quantity of matter exists both before and after the experiment”
Elements of Chemistry, Part I, Ch. XIII, trans. Robert Kerr

The principle of conservation of mass, stated as the basis for analysing vinous fermentation.
Citation: "We may lay it down as an incontestible axiom, that, in all the operations of art and nature, nothing is created; an equal quantity of matter exists both before and after the experiment" — Antoine Lavoisier, Elements of Chemistry, Part I, Ch. XIII, trans. Robert Kerr. (id lavoisier-elements-of-chemistry-q6)
Portrait: David - Portrait of Monsieur Lavoisier (cropped), Jacques-Louis David, Public domain.
