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122 Top Louis Pasteur Quotes

Famous As: French Chemist and Microbiologist Who Discovered the Principles of Vaccination, Microbial Fermentation and Pasteurization
Born On: December 27, 1822
Died On: September 28, 1895
Born In: Dole, France
Died At Age: 72

Louis Pasteur was a prominent French chemist, biologist, and microbiologist well-known for his discoveries of the principles of microbial fermentation, vaccination, and pasteurization. Pasteur is renowned for his discoveries in the causes and prevention of diseases and his breakthroughs have saved many lives. He is accredited for reducing mortality caused from childbed fever and was the first one to create vaccines for anthrax and rabies. His medical discoveries helped the germ theory of disease. We have curated some enlightening quotes and sayings by Louis Pasteur on life, universe, atheism, curiosity, mind, goals, technology, mind, philosophy etc that are sure to motivate you.

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Chance favors those who are prepared.

Chance favors those who are prepared.

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.

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.

Louis Pasteur
There is no such thing as applied science, only the application of pure science.

There is no such thing as applied science, only the application of pure science.

Louis Pasteur
If you suppress laboratories, physical science will be stricken with barrenness and death.

If you suppress laboratories, physical science will be stricken with barrenness and death.

Louis Pasteur
Worship the spirit of criticism.

Worship the spirit of criticism.

Louis Pasteur
The only thing that can bring joy is work.

The only thing that can bring joy is work.

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

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

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

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

Louis Pasteur
These are the living springs of great thoughts and great actions. Everything grows clear in the reflections from the Infinite.

These are the living springs of great thoughts and great actions. Everything grows clear in the reflections from the Infinite.

Louis Pasteur
I give them experiments and they respond with speeches.

I give them experiments and they respond with speeches.

Louis Pasteur
Chance favours a prepared mind.

Chance favours a prepared mind.

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

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

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

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

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.

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

Louis Pasteur
I am on the edge of mysteries and the veil is getting thinner and thinner.

I am on the edge of mysteries and the veil is getting thinner and thinner.

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

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

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

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

Louis Pasteur
To bring one's self to believe in a truth that has just dawned upon one is the first step towards progress; to persuade others is the second.

To bring one's self to believe in a truth that has just dawned upon one is the first step towards progress; to persuade others is the second.

Louis Pasteur
Science advances through tentative answers to a series of more and more subtle questions which reach deeper and deeper into the essence of natural phenomena.

Science advances through tentative answers to a series of more and more subtle questions which reach deeper and deeper into the essence of natural phenomena.

Louis Pasteur
Science proceeds by successive answers to questions more and more subtle, coming nearer and nearer to the very essence of phenomena.

Science proceeds by successive answers to questions more and more subtle, coming nearer and nearer to the very essence of phenomena.

Louis Pasteur
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.

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.

Louis Pasteur
There is no such thing as a special category of science called applied science; there is science and its applications, which are related to one another as the fruit is related to the tree that has borne it.

There is no such thing as a special category of science called applied science; there is science and its applications, which are related to one another as the fruit is related to the tree that has borne it.

Louis Pasteur
The nights seem to me too long... I am often scolded by Madame Pasteur, but I tell her I shall lead her to fame.

The nights seem to me too long... I am often scolded by Madame Pasteur, but I tell her I shall lead her to fame.

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.

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.

Louis Pasteur
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.

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
Worship the spirit of criticism. If reduced to itself it is not an awakener of ideas or a stimulant to great things, but, without it, everything is fallible; it always has the last word.

Worship the spirit of criticism. If reduced to itself it is not an awakener of ideas or a stimulant to great things, but, without it, everything is fallible; it always has the last word.

Louis Pasteur
Work usually follows will.

Work usually follows will.

Louis Pasteur
Science knows no country because it is the light that iluminates the world

Science knows no country because it is the light that iluminates the world

Louis Pasteur
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.

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.

Louis Pasteur
Analogy cannot serve as proof.

Analogy cannot serve as proof.

Louis Pasteur
The grandeur of the acts of men are measured by the inspiration from which they spring.

The grandeur of the acts of men are measured by the inspiration from which they spring.

Louis Pasteur
Science belongs to no one country.

Science belongs to no one country.

Louis Pasteur
The grandeur of the acts of men are measured by the inspiration from which they spring. Happy is he who bears a God within.

The grandeur of the acts of men are measured by the inspiration from which they spring. Happy is he who bears a God within.

Louis Pasteur
Without theory, practice is but routine born of habit. Theory alone can bring forth and develop the spirit of inventions.

Without theory, practice is but routine born of habit. Theory alone can bring forth and develop the spirit of inventions.

Louis Pasteur
You have not succeeded in your experiments, that is all there is to it.

You have not succeeded in your experiments, that is all there is to it.

Louis Pasteur
Wine is the healthiest and most health-giving of drinks.

Wine is the healthiest and most health-giving of drinks.

Louis Pasteur
The universe is asymmetric and I am persuaded that life, as it is known to us, is a direct result of the asymmetry of the universe or of its indirect consequences. The universe is asymmetric.

The universe is asymmetric and I am persuaded that life, as it is known to us, is a direct result of the asymmetry of the universe or of its indirect consequences. The universe is asymmetric.

Louis Pasteur
Do not promote what you can't explain, simplify, and prove early.

Do not promote what you can't explain, simplify, and prove early.

Louis Pasteur
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.

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.

Louis Pasteur
Did you ever observe to whom the accidents happen? Chance favors only the prepared mind.

Did you ever observe to whom the accidents happen? Chance favors only the prepared mind.

Louis Pasteur
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.

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
Fortune favors the well-prepared.

Fortune favors the well-prepared.

Louis Pasteur
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.

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

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

Louis Pasteur
There is a time in every man's life when he looks to his God, when he looks at his life, when he wonders how he will be remembered.

There is a time in every man's life when he looks to his God, when he looks at his life, when he wonders how he will be remembered.

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

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

Louis Pasteur
There does not exist a category of science to which one can give the name applied science. There are sciences and the applications of science, bound together as the fruit of the tree which bears it.

There does not exist a category of science to which one can give the name applied science. There are sciences and the applications of science, bound together as the fruit of the tree which bears it.

Louis Pasteur
The greatest disorder of the mind is to let will direct it.

The greatest disorder of the mind is to let will direct it.

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.

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.

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.

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
The universe is asymmetric.

The universe is asymmetric.

Louis Pasteur
Bernard was right. The germ is nothing, the terrain is everything.

Bernard was right. The germ is nothing, the terrain is everything.

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

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

Louis Pasteur
The flavor of wine is like delicate poetry.

The flavor of wine is like delicate poetry.

Louis Pasteur
What did you do today to receive your instruction?

What did you do today to receive your instruction?

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.

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.

Louis Pasteur
Chance favours the trained mind.

Chance favours the trained mind.

Louis Pasteur
Whatever your career may be, do not let yourselves become tainted by a deprecating and barren scepticism.

Whatever your career may be, do not let yourselves become tainted by a deprecating and barren scepticism.

Louis Pasteur
Where observation is concerned, chance favors only the prepared mind.

Where observation is concerned, chance favors only the prepared mind.

Louis Pasteur
Luck favors the mind that is prepared.

Luck favors the mind that is prepared.

Louis Pasteur
Where are the real sources of human dignity, freedom and modern democracy, if not in the concept of infinity to which all men are equal?

Where are the real sources of human dignity, freedom and modern democracy, if not in the concept of infinity to which all men are equal?

Louis Pasteur
Will opens the door to success, both brilliant and happy.

Will opens the door to success, both brilliant and happy.

Louis Pasteur
Time is the best appraiser of scientific work, and I am aware that an industrial discovery rarely produces all its fruit in the hands of its first inventor.

Time is the best appraiser of scientific work, and I am aware that an industrial discovery rarely produces all its fruit in the hands of its first inventor.

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?

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?

Louis Pasteur
There are no such things as applied sciences, only applications of science.

There are no such things as applied sciences, only applications of science.

Louis Pasteur
It is surmounting difficulties that makes heroes.

It is surmounting difficulties that makes heroes.

Louis Pasteur
Oh my goodness the mystery that has prompted my objective. My quality lies exclusively in my tirelessness.

Oh my goodness the mystery that has prompted my objective. My quality lies exclusively in my tirelessness.

Louis Pasteur
The controls of life are structured as forms and nuclear arrangements, in a relation with the motions of the universe.

The controls of life are structured as forms and nuclear arrangements, in a relation with the motions of the universe.

Louis Pasteur
The greatest malfunction of spirit is to believe things.

The greatest malfunction of spirit is to believe things.

Louis Pasteur
La fortuna juega a favor de una mente preparada

La fortuna juega a favor de una mente preparada

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

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

Louis Pasteur
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.

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
Science brings men nearer to God.

Science brings men nearer to God.

Louis Pasteur
Wine is the most healthful and most hygienic of beverages.

Wine is the most healthful and most hygienic of beverages.

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

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

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.

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
Do not let yourself be tainted with a barren skepticism.

Do not let yourself be tainted with a barren skepticism.

Louis Pasteur
My strength lies solely in my tenacity.

My strength lies solely in my tenacity.

Louis Pasteur
Live in the serene peace of laboratories and libraries

Live in the serene peace of laboratories and libraries

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

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

Louis Pasteur
Science and Peace will triumph over Ignorance and War...

Science and Peace will triumph over Ignorance and War...

Louis Pasteur
Life comes only from life.

Life comes only from life.

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

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

Louis Pasteur
When I approach a child, he inspires in me two sentiments; tenderness for what he is, and respect for what he may become.

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

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

Louis Pasteur
Question your priorities often, make sure God always comes first.

Question your priorities often, make sure God always comes first.

Louis Pasteur
One does not ask of one who suffers: What is your country and what is your religion? One merely says: You suffer, that is enough for me.

One does not ask of one who suffers: What is your country and what is your religion? One merely says: You suffer, that is enough for me.

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

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

Louis Pasteur
The greatest derangement of the mind is to believe in something because one wishes it to be so.

The greatest derangement of the mind is to believe in something because one wishes it to be so.

Louis Pasteur
The role of the infinitely small in nature is infinitely great.

The role of the infinitely small in nature is infinitely great.

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

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

Louis Pasteur
Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world.

Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world.

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

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

Louis Pasteur
To know how to wonder and question is the first step of the mind toward discovery.

To know how to wonder and question is the first step of the mind toward discovery.

Louis Pasteur
Little science takes you away from God but more of it takes you to Him.

Little science takes you away from God but more of it takes you to Him.

Louis Pasteur
Chance favors the prepared mind.

Chance favors the prepared mind.

Louis Pasteur
The more I study nature, the more I stand amazed at the work of the Creator. Science brings men nearer to God.

The more I study nature, the more I stand amazed at the work of the Creator. Science brings men nearer to God.

Louis Pasteur

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

Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world. Science is the highest personification of the nation because that nation will remain the first which carries the furthest the works of thought and intelligence.

Louis Pasteur

The Greeks bequeathed to us one of the most beautiful words in our language--the word 'enthusiasm'--en theos--a god within. The grandeur of human actions is measured by the inspiration from which they spring. Happy is he who bears a god within, and who obeys it.

Louis Pasteur

When you believe you have found an important scientific fact, and are feverishly curious to publish it, constrain yourself for days, weeks, years sometimes, fight yourself, try and ruin your own experiments, and only proclaim your discovery after having exhausted all contrary hypotheses. But when, after so many efforts you have at last arrived at a certainty, your joy is one of the greatest which can be felt by a human soul.

Louis Pasteur

Preconceived ideas are like searchlights which illumine the path of the experimenter and serve him as a guide to interrogate nature. They become a danger only if he transforms them into fixed ideas-this is why I should like to see these profound words inscribed on the threshold of all the temples of science: 'The greatest derangement of the mind is to believe in something because one wishes it to be so.'

Louis Pasteur