"There can be no such thing as a 'pure' science, as science is always influenced by the human mind."

"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…"

"To be a good scientist, one must be a good philosopher."

"The history of science shows that even the most firmly established theories can be overturned by new discoveries."

"I was never a revolutionary. I just wanted to do something useful."