My ambitions were already very clearly fixed by the time I was 6 or 7.

Although I am a public figure, I'm still a little shy. I don't think my own personality is important. I prefer to keep some small dosage of privacy.

I'd like to put in a vote for the intrinsic fascination of science.

I was a bad practicing physician because I was never sure of the diagnosis or of the treatment.

To have the recognition of your colleagues is great. The public attention is a mixed blessing.

I got my Nobel Prize for my lab work.

If lifespan jumps by 30 or 40 years, that has enormous implications.