"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."

"My own estimate is that all of the people in the United States would be killed in a nuclear war, if we do not build fallout shelters, and that if we do build them and train the American people, all of…"

"I had something of a shock when I went to Europe in 1926 and discovered that there were a good number of people around that I thought to be smarter than me."

"I believe that the world would be a better place if everyone took more vitamin C."

"The most important thing in life is to be happy, and to make others happy."