When things get bad enough, then something happens to correct the course. And it's for that reason that I speak about evolution as an error-making and an error-correcting process. And if we can be ever so much better - ever so much slightly better - at error correcting than at error making, then we'll make it.

My ambition was to bring to bear on medicine a chemical approach. I did that by chemical manipulation of viruses and chemical ways of thinking in biomedical research.

What people think of as the moment of discovery is really the discovery of the question.

What is ... important is that we - number one: Learn to live with each other. Number two: try to bring out the best in each other.

Risks, I like to say, always pay off. You learn what to do, or what not to do.

Find the right questions. You don't invent the answers, you reveal the answers.

There is hope in dreams, imagination, and in the courage of those who wish to make those dreams a reality.