Sure, there have been scientists with Professor McAfee's attitude - Jonas Salk was asked who owned the patent to the polio vaccine and scoffed: "Could you patent the sun?"

Several years ago, when I was writing a book about the polio vaccine, I had the opportunity to spend months wading through the personal papers of Jonas Salk.

Secret #3 from Dr. Jonas Salk: "I have had dreams and I have had nightmares, but I have conquered my nightmares because of my dreams. ""