Obervation is a passive science, experimentation is an active science.
CLAUDE BERNARDPut off your imagination, as you put off your overcoat, when you enter the laboratory. Put it on again, as you put on your overcoat, when you leave.
More Claude Bernard Quotes
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The experimenter who does not know what he is looking for will not understand what he finds.
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The stability of the internal medium is a primary condition for the freedom and independence of certain living bodies in relation to the environment surrounding them.
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Science rejects the indeterminate.
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In science, the best precept is to alter and exchange our ideas as fast as science moves ahead.
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The science of life is a superb and dazzlingly lighted hall which may be reached only by passing through a long and ghastly kitchen.
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Now, a living organism is nothing but a wonderful machine endowed with the most marvellous properties and set going by means of the most complex and delicate mechanism.
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All the vital mechanisms, varied as they are, have only one object, that of preserving constant the conditions of life in the internal environment.
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Everything is poisonous, nothing is poisonous, it is all a matter of dose.
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A discovery is generally an unforeseen relation not included in theory.
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In the philosophic sense, observation shows and experiment teaches.
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If I had to define life in a single phrase, I should clearly express my thought of throwing into relief one characteristic which, in my opinion, sharply differentiates biological science. I should say: life is creation.
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Science does not permit exceptions.
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First causes are outside the realm of science.
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The investigator should have a robust faith – and yet not believe.
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We must keep our freedom of mind, and must believe that in nature what is absurd, according to our theories, is not always impossible.
CLAUDE BERNARD