The experimenter who does not know what he is looking for will not understand what he finds.
CLAUDE BERNARDThe investigator should have a robust faith – and yet not believe.
More Claude Bernard Quotes
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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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Those who do not know the torment of the unknown cannot have the joy of discovery.
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We must never make experiments to confirm our ideas, but simply to control them.
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The minds that rise and become really great are never self-satisfied, but still continue to strive.
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The first requirement in using statistics is that the facts treated shall be reduced to comparable units.
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A discovery is generally an unforeseen relation not included in theory.
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Science does not permit exceptions.
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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 terrain is everything; the germ is nothing.
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Men who believe too firmly in their theories, do not believe enough in the theories of others. So these despisers of their fellows make experiments only to destroy a theory, instead of to seek the truth.
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Well-observed facts, though brought to light by passing theories, will never die; they are the material on which alone the house of science will at last be built.
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The better educated we are and the more acquired information we have, the better prepared shall we find our minds for making great and fruitful discoveries.
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Mediocre men often have the most acquired knowledge. It is in the darker. It is in the darker regions of science that great men are recognized; they are marked by ideas which light up phenomena hitherto obscure and carry science forward.
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Obervation is a passive science, experimentation is an active science.
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The great experimental principle, then, is doubt, that philosophic doubt which leaves to the mind its freedom and initiative, and from which the virtues most valuable to investigators in physiology and medicine are derived.
CLAUDE BERNARD






