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.

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

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.

If it takes you 20 or 25 years to establish yourself in one field, you really ought to be careful not to stray too far.

Everybody has to learn for the first time.

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