I came- though the child of entirely irreligious (Jewish) parents - to a deep religiousness, which, however, reached an abrupt end at the age of twelve.

The process of scientific discovery is, in effect, a continual flight from wonder.

Despite my being an old gypsy there is a tendency to respectability inherent in old age.

I make it a rule not to clutter my mind with simple information that I can find in a book in five minutes.

Nationalism is the measels of mankind.

Man's will, sustained by an indominable conviction, is much more powerful than material forces that seem insurmountable.

He who joyfully marches to music in rank and file has already earned my contempt. He has been given a large brain by mistake, since for him the spinal cord would fully suffice. This disgrace to civilization should be done away with at once. Heroism at command, senseless brutality, deplorable love-of-country stance, how violently I hate all this, how despicable and ignoble war is; I would rather be torn to shreds than be a part of so base an action! It is my conviction that killing under the cloak of war is nothing but an act of murder.