"I have always been interested in the nature of things, and especially in the nature of life."

"I might well have become egotistical as a result [of the Langmuir Prize].... But... I think that I just said I shouldn't let this go to my head. I shouldn't think I'm really better than other people e…"

"I was able to solve this problem because I don't have a computer. I know what I am doing every step, and the steps go slowly enough that I can think."

"The pursuit of knowledge is an endless journey."

"I am not afraid of death. I am afraid of not living."