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Do not put forward anything that you cannot prove by experimentation.

Louis Pasteur

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Louis Pasteur
Age: 72 †
Born: 1822
Born: December 27
Died: 1895
Died: September 28
Agronomist
Biochemist
Biologist
Chemist
Microbiologist
Naturalist
University Teacher
Dôle
Pasteur
Prove
Cannot
Anything
Experimentation
Forward

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Time is the best appraiser of scientific work, and I am aware that an industrial discovery rarely produces all its fruit in the hands of its first inventor.
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Science proceeds by successive answers to questions more and more subtle, coming nearer and nearer to the very essence of phenomena.
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God grant that by my persevering labours I may bring a little stone to the frail and ill-assured edifice of our knowledge of those deep mysteries of Life and Death where all our intellects have so lamentably failed.
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Chance favors the prepared mind.
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The Greeks understood the mysterious power of the below things. They are the ones who gave us one of the most beautiful words in our language, the word enthusiasm.
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Messieurs, c'est les microbes qui auront le dernier mot. (Gentlemen, it is the microbes who will have the last word.)
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Where are the real sources of human dignity, freedom and modern democracy, if not in the concept of infinity to which all men are equal?
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If it is a terrifying thought that life is at the mercy of the multiplication of these minute bodies [microbes], it is a consoling hope that Science will not always remain powerless before such enemies.
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You have not succeeded in your experiments, that is all there is to it.
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It is not the germs we need worry about. It is our inner terrain.
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There is no such thing as applied science, only the application of pure science.
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It is a matter of fact I approached without a preconceived idea, too ready to declare, if the experiment had imposed upon me the confession, that there was a spontaneous generation, of which I am convinced today that those who assure it are blindfolded.
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No, there is now no circumstance known in which it can be affirmed that microscopic beings came into the world without germs, without parents similar to themselves. Those who affirm it have been duped by illusions, by ill-conducted experiments, spoilt by errors that they either did not perceive or did not know how to avoid.
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Nothing is lost and nothing is created in the operations of art as those of nature.
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The grandeur of the acts of men are measured by the inspiration from which they spring.
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Science and Peace will triumph over Ignorance and War...
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Change only favours minds that are diligently looking and preparing for discovery.
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Science belongs to no one country.
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There are no such things as applied sciences, only applications of science.
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The only thing that can bring joy is work.
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