Best 102 quotes of Louis Pasteur on MyQuotes

Louis Pasteur

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    Louis Pasteur

    A bottle of wine contains more philosophy than all the books in the world.

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    Louis Pasteur

    After death, life reappears in a different form and with different laws. It is inscribed in the laws of the permanence of life on the surface of the earth and everything that has been a plant and an animal will be destroyed and transformed into a gaseous, volatile and mineral substance.

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    Louis Pasteur

    Analogy cannot serve as proof.

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    Louis Pasteur

    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.

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    Louis Pasteur

    As in the experimental sciences, truth cannot be distinguished from error as long as firm principles have not been established through the rigorous observation of facts.

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    Louis Pasteur

    Blessed is he who carries within himself a God, an ideal, and obeys it.

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    Louis Pasteur

    Blessed is he who carries within himself a God, an ideal, and who obeys it: ideal of art, ideal of science, ideal of the gospel virtues, therein lie the springs of great thoughts and great actions; they all reflect light from the Infinite.

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    Louis Pasteur

    ... by chance you will say, but chance only favors the mind which is prepared.

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    Louis Pasteur

    Chance favors the prepared mind.

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    Louis Pasteur

    Chance favors those who are prepared.

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    Louis Pasteur

    Chance favours a prepared mind.

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    Louis Pasteur

    Chance favours the trained mind.

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    Louis Pasteur

    Change only favours minds that are diligently looking and preparing for discovery.

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    Louis Pasteur

    Do not let yourself be tainted with a barren skepticism.

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    Louis Pasteur

    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.

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    Louis Pasteur

    Fortune favors the well-prepared.

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    Louis Pasteur

    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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    Louis Pasteur

    Great problems are now being handled, keeping every thinking man in suspense; the unity or multiplicity of human races; the creation of man 1,000 years or 1,000 centuries ago; the fixity of species, or the slow and progressive transformation of one species into another; the eternity of matter; the idea of a God unnecessary: such are some of the questions that humanity discusses nowadays.

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    Louis Pasteur

    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'.

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    Louis Pasteur

    How do you know that the incessant progress of science will not compel scientists to consider that life has existed during eternity, and not matter?

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    Louis Pasteur

    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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    Louis Pasteur

    If perchance you should falter during the journey, a hand would be there to support you. If that should be wanting, God, who alone could take that hand from you, would Himself accomplish its work.

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    Louis Pasteur

    If science has no country, the scientist should have one, and ascribe to it the influence which his works may have in this world.

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    Louis Pasteur

    I give them experiments and they respond with speeches.

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    Louis Pasteur

    Imagination should give wings to our thoughts but we always need decisive experimental proof, and when the moment comes to draw conclusions and to interpret the gathered observations, imagination must be checked and documented by the factual results of the experiment.

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    Louis Pasteur

    In good philosophy, the word cause ought to be reserved to the single Divine impulse that has formed the universe.

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    Louis Pasteur

    In matters of observation chance favors only the prepared mind. (not literal translation) - Dan's les champs de observation le hasard ne favorise que les esprits prepares.

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    Louis Pasteur

    Inspiration is the impact of a fact on a well-prepared mind

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    Louis Pasteur

    In that memorable year, 1822: Oersted, a Danish physicist, held in his hands a piece of copper wire, joined by its extremities to the two poles of a Volta pile. On his table was a magnetized needle on its pivot, and he suddenly saw (by chance you will say, but chance only favours the mind which is prepared) the needle move and take up a position quite different from the one assigned to it by terrestrial magnetism. A wire carrying an electric current deviates a magnetized needle from its position. That, gentlemen, was the birth of the modern telegraph.

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    Louis Pasteur

    In the fields of observation chance favors only those minds which are prepared.

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    Louis Pasteur

    In the realm of scientific observation, luck is granted only to those who are prepared.

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    Louis Pasteur

    Intuition is given only to him who has undergone long preparation to receive it.

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    Louis Pasteur

    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.

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    Louis Pasteur

    It is surmounting difficulties that makes heroes.

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    Louis Pasteur

    It is not the germs we need worry about. It is our inner terrain.

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    Louis Pasteur

    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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    Louis Pasteur

    It would seem to me that I was committing a theft if I were to let one day go by without doing some work.

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    Louis Pasteur

    Let me tell you the secret that has led me to my goal. My strength lies solely in my tenacity.

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    Louis Pasteur

    Live in the serene peace of laboratories and libraries

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    Louis Pasteur

    Luck favors the mind that is prepared.

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    Louis Pasteur

    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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    Louis Pasteur

    My strength lies solely in my tenacity.

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    Louis Pasteur

    My opinion - nay more, my conviction - is that, in the present state of science, as you rightly say, spontaneous generation is a chimera; and it would be impossible for you to contradict me, for my experiments all stand forth to prove that spontaneous generation is a chimera.

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    Louis Pasteur

    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.

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    Louis Pasteur

    Never will the doctrine of spontaneous generation recover from the mortal blow struck by this simple experiment.

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    Louis Pasteur

    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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    Louis Pasteur

    Nothing is lost and nothing is created in the operations of art as those of nature.

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    Louis Pasteur

    One must not assume that an understanding of science is present in those who borrow the language

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    Louis Pasteur

    Outsidetheir laboratories, thephysicianand chemist are soldiers without arms on the field of battle.

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    Louis Pasteur

    Posterity will one day laugh at the foolishness of modern materialistic philosophers.