Dans la nature rien ne se crée, rien ne se perd, tout change.

In nature nothing is created, nothing is lost, everything changes.

Antoine Lavoisier

Mots clés science biology nature change

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This theory [the oxygen theory] is not as I have heard it described, that of the French chemists, it is mine (elle est la mienne); it is a property which I claim from my contemporaries and from posterity.

Antoine Lavoisier

Mots clés science french theory discovery invention chemistry posterity scientist scientific-theory oxygen-theory

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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

Mots clés science truth reason nature trust naturalism facts scientific-method observation chemistry experiment scientist submit chemist father-of-modern-chemistry

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