In living through this great epoch, it is difficult to reconcile oneself to the fact that one belongs to that mad, degenerate species that boasts of its free will. How I wish that somewhere there existed an island for those who are wise and of good will. In such a place even I should be an ardent patriot!

One must console oneself with the thought that time has a sieve through which most of these important things run into the ocean of oblivion and what remains after this selection is often still trite and bad.

Small is the number of them that see with their own eyes and feel with their own hearts.

The release of atomic power has changed everything except our way of thinking ... the solution to this problem lies in the heart of mankind. If only I had known, I should have become a watchmaker. (1945)

... the desire for truth must take precedence over all other desires.

Fear or stupidity has always been the basis of most human actions.

Although I tried to be universal in thought, I am European by instinct and inclination.