Antoine Lavoisier — "We must trust to nothing but facts: these are presented to us by nature and cann…"

"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; the quality an…"

"Chemistry is a science of facts and experiments, and not of opinions."

"The future of chemistry depends on the precision of its instruments and the accuracy of its observations."

"The value of a discovery consists not in its novelty, but in its truth."

"It is not often that a man has the opportunity to be useful to his fellow citizens without any personal risk."