Louis Pasteur — "The scientific life is a life of constant battle against error."

"Posterity will one day laugh at the sublime foolishness of the modern materialistic philosophy."

"If I had the honor of being a surgeon… I would not only use absolutely clean instruments, but after having cleaned my hands with the greatest care, I would subject them to a rapid flaming."

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

"The greatest error is to believe that one knows everything."

"Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world. Science is the highest embodiment of the patriotism of nations."