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1 " We must trust to nothing but facts: These are presented to us by Nature, and cannot deceive. We ought, in every instance, to submit our reasoning to the test of experiment, and never to search for truth but by the natural road of experiment and observation. "
― Antoine Lavoisier , Elements of Chemistry
2 " Dans la nature rien ne se crée, rien ne se perd, tout change.In nature nothing is created, nothing is lost, everything changes. "