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

I hope I've lived a life of science whose style will encourage younger people.

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

If you wanted to dissect the structure of living cells, genetic analysis was an extremely powerful method, so my interest turned to that.

I have many shortcomings. I feel very lucky to have been able to have what I've had.

A Swedish newspaper reporter called and said, You've been awarded the Prize. I was quite sure it was a practical joke.

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