The more one chases the quanta, the better they hide themselves.
Berlin is the place to which I am most closely bound by human and scientific ties.
I should very much like to remain in the darkness of not having been analyzed.
[Mystery] is the fundamental emotion that stands at the cradle of true art and true science.
Everybody acts not only under external compulsion but also in accordance with inner necessity.
Is it not better for a man to die for a cause in which he believes, such as peace, than to suffer for a cause in which he does not believe, such as war?