One does not ask of one who suffers: What is your country and what is your religion? One merely says: You suffer, that is enough for me.

One must not assume that an understanding of science is present in those who borrow the language

There are no such things as applied sciences, only applications of science.

When you believe you have found an important scientific fact, and are feverishly curious to publish it, constrain yourself for days, weeks, years sometimes, fight yourself, try and ruin your own experiments, and only proclaim your discovery after having exhausted all contrary hypotheses. But when, after so many efforts you have at last arrived at a certainty, your joy is one of the greatest which can be felt by a human soul.

One does not ask of one who suffers: What is your country and what is your religion? One merely says: You suffer, that is enough for me.

In good philosophy, the word cause ought to be reserved to the single Divine impulse that has formed the universe.

Luck favors the mind that is prepared.