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

"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."

"Do not let your special talents in chemistry, your love for chemistry, keep you from developing your talents in other fields. Do not let yourself be a narrow specialist."

"I believe that peace is not just the absence of war, but the presence of justice."

"Science is the search for truth, but it is not the search for certainty. When science is used to search for certainty, it becomes something other than science."