I am on the edge of mysteries and the veil is getting thinner and thinner.

Imagination should give wings to our thoughts but we always need decisive experimental proof, and when the moment comes to draw conclusions and to interpret the gathered observations, imagination must be checked and documented by the factual results of the experiment.

Chance favours a prepared mind.

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.

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

It is surmounting difficulties that makes heroes.

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