"I have always been a pacifist, and I believe that war is never the answer."

"I have always been a scientist, and I believe that science is the best way to understand the world."

"I had begun to think about the theory of the chemical bond very seriously in 1926, '27, after quantum mechanics was discovered and then in 1928 I published a paper, a preliminary paper, and said that …"

"Well, I thought, that's nice of the old guy to say that, but I'm a little skeptical myself. And as the years went by, I thought, I don't do the sort of work for which Nobel Prizes are given."

"You can't just have a good idea. You have to have a lot of good ideas."