"There's been a quantum leap technologically in our age, but unless there's another quantum leap in human relations, unless we learn to live in a new way towards one another, there will be a catastrophe."

Children don’t heed the life experiences of their parents, and nations ignore history. Bad lessons always have to be learned anew.

Happiness, as a pursuit, is suitable only for pigs.

I have reached the conviction that the abolition of the death penalty is desirable. Reasons: 1) Irreparability in the event of an error of justice, 2) Detrimental moral influence of the execution procedure on those who, whether directly or indirectly, have to do with the procedure.

Good acts are like good poems. One may easily get their drift, but they are not rationally understood.

Mere praise of peace is easy and ineffective. What is needed is acitve participation in the fight against war and everything which leads to it.

The history of scientific and technical discovery teaches us that the human race is poor in independent and creative imagination.