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

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.

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.

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

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.

Do not let yourself be tainted with a barren skepticism.

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