“The greatness of human actions is measured by the inspiration that it brings.”

— Louis Pasteur, Discours de réception de Louis Pasteur (1882)

About Louis Pasteur

1822 – 1895

French chemist and microbiologist who developed pasteurization and helped establish the germ theory of disease.

“Chance favors only the prepared mind.”

“In the fields of observation chance favours only the prepared mind.”

“There does not exist a category of science to which one can give the name applied science.”

“Some are born great, some achieve greatness, and some have greatness thrust upon 'em.”

“Prosperity is the best protector of principle.”

“Ambition has its disappointments to sour us, but never the good fortune to satisfy us.”

“The trouble about trying to make yourself stupider than you really are is that you very often succeed.”

“The long, dull monotonous years of middle-aged prosperity or middle-aged adversity are excellent campaigning weather.”

“In all things success depends on previous preparation, and without such previous preparation there is sure to be failure.”