I must try, however, as best I can, although I am very conscious of the fact that our feelings and strivings are often contradictory and obscure and that they cannot be expressed in easy and simple formulas.

There is no place in this new kind of physics both for the field and matter, for the field is the only reality.

Don't dream of being a good person, be a human being is valuable and gives value to life.

My political ideal is democracy. Let every man be respected as an individual and no man idolized.

Regarding sex education: no secrets!

What a deep faith in the rationality of the structure of the world and what a longing to understand even a small glimpse of the reason revealed in the world there must have been in Kepler and Newton to enable them to unravel the mechanism of the heavens in long years of lonely work!

The word God is for me nothing more than the expression and product of human weaknesses.