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

All of civility depends on being able to contain the rage of individuals.

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.

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

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

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

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