Louis Pasteur Quotes

53 Sourced Quotes

No, a thousand times no; there does not exist a category of science to which one can give the name applied science. There are science and the applications of science, bound together as the fruit to the tree which bears it.

Louis Pasteur
A man of science should think of what will be said of him in the following century, not of the insults or the compliments of one day.

Louis Pasteur
The arguments... by which you support my theories, are most ingenious, but not founded on demonstrated facts; analogy is no proof.

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

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.

Louis Pasteur
After death, life reappears in a different form and with different laws. It is inscribed in the laws of the permanance 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
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.

Louis Pasteur
Little tolerant of frivolous or prejudiced contradiction, contemptuous of that ignorant criticism which doubts on principle, I welcome with open arms the militant attack which has a method in doubting and whose rule of conduct has the motto "More light."

Louis Pasteur
Wine may well be considered the most healthful and most hygienic of beverages.

Louis Pasteur
If I have sometimes disturbed the peace of our Academic meetings by somewhat too lively discussions, it is because I have passionately defended the truth.

Louis Pasteur
He who proclaims the existence of the infinite - and no one can escape from it - accumulates in this affirmation more of the supernatural than exists in all the miracles of all religions.

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

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?

Louis Pasteur
You bring me the deepest joy that can be felt by a man whose invincible belief is that Science and Peace will triumph over Ignorance and War, that nations will unite, not to destroy, but to build, and that the future will belong to those who will have done most for suffering humanity.

Louis Pasteur
Science should not concern itself in any way with the philosophical consequences of its discoveries.

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...

Louis Pasteur
All things are hidden, obscure and debatable if the cause of the phenomena be unknown, but everything is clear if this cause be known.

Louis Pasteur
The characteristic of a true theory is its fruitfulness.

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.

Louis Pasteur
I beseech you to take interest in these sacred domains so expressively called laboratories. Ask that there be more and that they be adorned for these are the temples of the future, wealth and well-being. It is here that humanity will grow, strengthen and improve. Here, humanity will learn to read progress and individual harmony in the works of nature, while humanity's own works are all too often those of barbarism, fanaticism and destruction.

Louis Pasteur