"The highest court is in the end one's own conscience and conviction—that goes for you and for Einstein and every other physicist—and before any science there is first of all belief. For me, it is beli…"

"A scientist must be a man of faith, not in the sense of a believer in dogma, but in the sense of a man who believes in the possibility of discovering new truths."

"The history of science is a history of errors."

"The greatest discovery of all time is that man can change his future by merely changing his attitude."

"The constant changes in the scientific worldview show how important it is to remain open to new ideas."