"If a man is to be a good physicist, he must have an intuitive grasp of the physical reality, which can be acquired only by much experience."

"Only a few know, how much one must know to know how little one knows."

"The first gulp from the glass of natural sciences will turn you into an atheist, but at the bottom of the glass God is waiting for you."

"The decision to break with the tradition of classical physics was a very difficult one."

"The existing scientific concepts cover always only a very limited part of reality, and the other part which has not yet been understood is infinite."