Great spirits have always found violent opposition from mediocre minds. The latter cannot understand it when a man does not thoughtlessly submit to hereditary prejudices but honestly and courageously uses his intelligence.

Concern for man himself must always constitute the chief objective of all technological effort

An oligarchy of private capital cannot be effectively checked even by a democratically organized political society because under existing conditions, private capitalists inevitably control, directly or indirectly, the main sources of information.

Our schoolbooks glorify war and conceal its horrors. They indoctrinate children with hatred. I would teach peace rather than war, love rather than hate.

The most aggravating thing about the younger generation is that I no longer belong to it.

I am doing just fine, considering that I have triumphantly survived Nazism and two wives.

I should very much like to remain in the darkness of not having been analyzed.