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First causes are outside the realm of science.

Claude Bernard

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Claude Bernard
Age: 64 †
Born: 1813
Born: July 12
Died: 1878
Died: February 10
Physician Writer
Physiologist
Politician
Professor
Psychologist
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Science
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More quotes by Claude Bernard

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The terrain is everything the germ is nothing.
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The doubter is a true man of science: he doubts only himself and his interpretations, but he believes in science.
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A contemporary poet has characterized this sense of the personality of art and of the impersonality of science in these words,-'Art is myself science is ourselves. '
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Il ne fallait jamais faire des expériences pour confirmer ses idées, mais simplement pour les contrôler. We must never make experiments to confirm our ideas, but simply to control them.
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A great discovery is a fact whose appearance in science gives rise to shining ideas, whose light dispels many obscurities and shows us new paths.
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Obervation is a passive science, experimentation is an active science.
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Priestley [said] that each discovery we make shows us many others that should be made.
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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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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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Mediocre men often have the most acquired knowledge
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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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Proof that a given condition always precedes or accompanies a phenomenon does not warrant concluding with certainty that a given condition is the immediate cause of that phenomenon. It must still be established that when this condition is removed, the phenomen will no longer appear.
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It is what we know already that often prevents us from learning.
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Those who do not know the torment of the unknown cannot have the joy of discovery.
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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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Science does not permit exceptions.
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Our ideas are only intellectual instruments which we use to break into phenomena we must change them when they have served their purpose, as we change a blunt lancet that we have used long enough.
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Science admits no exceptions otherwise there would be no determinism in science, or rather, there would be no science.
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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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In the philosophic sense, observation shows and experiment teaches.
Claude Bernard