The technologies which have had the most profound effects on human life are usually simple.

I'm happy that I've raised six kids, and not one of them is a Ph.D.

When I listen to the public debates about climate change, I am impressed by the enormous gaps in our knowledge, the sparseness of our observations and the superficiality of our theories.

There is a great satisfaction in building good tools for other people to use.

Successful technologies often begin as hobbies. Jacques Cousteau invented scuba diving because he enjoyed exploring caves. The Wright brothers invented flying as a relief from the monotony of their normal business of selling and repairing bicycles.

Scepticism is as important for a good journalist as it is for a good scientist.

Well germ warfare of course exists. There have been on a small scale... There have been, of course, a few people who got killed with anthrax right here in Princeton.