What really interests me is whether God had any choice in the creation of the World.

I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.

Never do anything against conscience even if the state demands it.

I am a Jew, but I am enthralled by the luminous figure of the Nazarene….No one can read the Gospels without feeling the actual presence of Jesus.

Games are the most elevated form of investigation.

Classical thermodynamics ... is the only physical theory of universal content which I am convinced ... will never be overthrown.

The State idea is not according to my heart. I cannot understand why it is needed. It is connected with narrow-minded and economic obstacles. I believe it is bad. I have always been against it.