My relationship to the Jewish people has become my strongest human bond, ever since I became fully aware of our precarious situation among the nations of the world.

Marie Curie is, of all celebrated beings, the only one whom fame has not corrupted.

To dwell on the things that depress or anger us does not help in overcoming them. One must knock them down alone.

Nothing truly valuable can be achieved except by the unselfish cooperation of many individuals.

I received your letter of June 10th. I have never talked to a Jesuit priest in my life and I am astonished by the audacity to tell such lies about me. From the viewpoint of a Jesuit priest I am, of course, and have always been an atheist.

Violence sometimes may have cleared away obstructions quickly, but it never has proved itself creative.

Love is not the stupidest thing a man does, but it cannot be blamed on gravity.