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— Robert Tisserand"Synthetic or inorganic substances do not contain any 'life force'; they are not dynamic. Everything is made of chemicals, but organic substances like essential oils have a structure which only mother nature can put together. They have a life force, an additional impulse which can only be found in living things."
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Thus, while I thought myself employed only in forming a Nomenclature, and while I proposed to myself nothing more than to improve the chemical language, my work transformed itself by degrees, without my being able to prevent it, into a treatise upon the Elements of Chemistry.
— Antoine Lavoisier
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We do care about planets like the Earth because by now we understood that life as a chemical system really needs a smaller planet with water and with rocks and with a lot of complex chemistry to originate, to emerge, to survive.
— Dimitar Sasselov
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