In a society which is structured the wrong way, piety has no effect.

I am a man, and God is hiding from us humans. We are unable to see Him, we can only search for Him

The evolution of humans can not only be seen as the grand total of their wars; it is also defined by the evolution of the human mind and the development of the human consciousness.

Today's Communism can survive only if it abandons the myth of an infallible party, if it continues to think, and if it becomes democratic.

The content of physics is the concern of physicists, its effect the concern of all men.

Humans need justice in the here and now and grace in the thereafter. Justice in the here and now is possible only without freedom,and grace in the thereafter only through the freedom of God.

The only remedy against hunger is reasonable birth control.