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List of Louis Pasteur Quotes

Explore our hand-picked selection of 125 inspiring quotes by Louis Pasteur.

About Louis Pasteur

  • Born: December 27, 1822
  • Died: September 28, 1895
  • Occupation: Chemist
    • I give them experiments and they respond with speeches.
    Science Giving Speech
    I have the faith of a breton peasant and by the time i die i hope to have the faith of a breton peasant's wife.
    Wife Peasants Dies
    Every chemical substance, whether natural or artificial, falls into one of two major categories, according to the spatial characteristic of its form. the distinction is between those substances that have a plane of symmetry and those that do not. the former belong to the mineral, the latter to the living world.
    Life Nature Fall
    Herrmann pidoux and armand trousseau stated 'disease exists within us, because of us, and through us', pasteur did not entirely disagree, 'this is true for certain diseases', he wrote cautiously, only to add immediately: 'i do not think that it is true for all of them'.
    Truth Science Thinking
    My present and most fixed opinion regarding the nature of alcoholic fermentation is this: the chemical act of fermentation is essentially a phenomenon correlative with a vital act, beginning and ending with the latter. i believe that there is never any alcoholic fermentation without their being simultaneously the organization, development, multiplication of the globules, or the pursued, continued life of globules which are already formed.
    Believe Science Organization
    I propose to provide proof... that just as always an alcoholic ferment, the yeast of beer, is found where sugar is converted into alcohol and carbonic acid, so always a special ferment, a lactic yeast, is found where sugar is transformed into lactic acid. and, furthermore, when any plastic nitrogenated substance is able to transform sugar into that acid, the reason is that it is a suitable nutrient for the growth of the [lactic] ferment.
    Beer Alcohol Growth
    We affirm the neutrality of science ... science is of no country. ... but if science has no country, the scientist must keep in mind all that may work towards the glory of his country. in every great scientist will be found a great patriot.
    Country Hard Work Science
    The artificial products do not have any molecular dissymmetry; and i could not indicate the existence of a more profound separation between the products born under the influence of life and all the others.
    Life Science Profound
    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.
    Errors Parent World
    Chance favors those who are prepared.
    Wrestling Favors Chance
    Are the atoms of the dextroacid (tartaric) grouped in the spirals of a right-hand helix or situated at the angles of an irregular tetrahedron, or arranged in such or such particular unsymmetrical fashion? we are unable to reply to these questions. but there can be no reason for doubting that the grouping of the atoms has an unsymmetrical arrangement with a non-superimposable image. it is not less certain that the atoms of the laevo-acid realize precisely an unsymmetrical arrangement of the inverse of the above.
    Fashion Hands Doubt
    There is no such thing as applied science, only the application of pure science.
    Applied Science Application Pure
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