“Chemical analysis and synthesis go no farther than to the separation of particles one from another, and to their reunion. No new creation or destruction of matter is within the reach of chemical agency. We might as well attempt to introduce a new planet into the solar system, or to annihilate one already in existence, as to create or destroy a particle of hydrogen. All the changes we can produce, consist in separating particles that are in a state of cohesion or combination, and joining those that were previously at a distance.”

— John Dalton , book A New System of Chemical Philosophy

Source: A New System of Chemical Philosophy (1808), Ch. III. On Chemical Synthesis

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John Dalton 6

English chemist, meteorologist and physicist 1766–1844

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