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Do not put forward anything that you cannot prove by experimentation.

Louis Pasteur

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Louis Pasteur
Age: 72 †
Born: 1822
Born: December 27
Died: 1895
Died: September 28
Agronomist
Biochemist
Biologist
Chemist
Microbiologist
Naturalist
University Teacher
Dôle
Pasteur
Experimentation
Forward
Prove
Cannot
Anything

More quotes by Louis Pasteur

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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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The Greeks understood the mysterious power of the below things. They are the ones who gave us one of the most beautiful words in our language, the word enthusiasm.
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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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If science has no country, the scientist should have one, and ascribe to it the influence which his works may have in this world.
Louis Pasteur
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Worship the spirit of criticism.
Louis Pasteur
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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.
Louis Pasteur
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Since the most ancient times, all men, and particularly those who endeavored in the practice of medicine, have brought closer together two natural phenomena of capital importance: illness or fever and fermentation.
Louis Pasteur
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The more I know, the more nearly is my faith that of the Breton peasant. Could I but know all I would have the faith of a Breton peasant woman.
Louis Pasteur
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Luck favors the mind that is prepared.
Louis Pasteur
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La fortuna juega a favor de una mente preparada
Louis Pasteur
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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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The more I study nature, the more I stand amazed at the work of the Creator. Science brings men nearer to God.
Louis Pasteur
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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.
Louis Pasteur
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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.
Louis Pasteur
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When I approach a child, he inspires in me two sentiments tenderness for what he is, and respect for what he may become.
Louis Pasteur
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When one works and imagines and dreams of nothing else than the search for answers that God has posed, it is difficult to be so still.
Louis Pasteur
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Posterity will one day laugh at the sublime foolishness of the modern materialistic philosophy. The more I study nature, the more I stand amazed at the work of the Creator. I pray while I am engaged at my work in the laboratory.
Louis Pasteur
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Chance favours the trained mind.
Louis Pasteur
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Whether our efforts are, or not, favored by life, let us be able to say, when we come near to the great goal, I have done what I could.
Louis Pasteur
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The role of the infinitely small in nature is infinitely great.
Louis Pasteur