I think we have to believe we are here for some purpose, and I know there are many cynics who will deny it, but they don't live as if they deny it.

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

The single biggest threat to man's continued dominance on the planet is the virus.

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

When I was in high school, I became interested in cytochemistry: chemical analysis under the microscope, and trying to understand the composition of cells.

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

I wish I had a talent for dropping things as well as taking on new ones. It gets to be quite a clutter after a while.