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

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

My present and most fixed opinion regarding the nature of alcoholic fermentation is this: The chemical act of fermentation is essentially a phenomenon correlative with a vital act, beginning and ending with the latter. I believe that there is never any alcoholic fermentation without their being simultaneously the organization, development, multiplication of the globules, or the pursued, continued life of globules which are already formed.

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.

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

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

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