I never know what I'm going to talk about until I get on stage. I never give the same lecture twice, which is why I'll have people follow me from place to place like Deadheads.

The two most common elements in the universe are hydrogen and stupidity.

There's some things that no amount of money can get me to do.

I don't remember anyone who could stand being in my company for more than five hours without running into the street.

It is the business of the future to be dangerous; and it is among the merits of science that it equips the future for its duties.

People wanted to do science outside of classical institutions like universities or big corporations, so we embraced it.

The truth of our faith becomes a matter of ridicule among the infidels if any Catholic, not gifted with the necessary scientific learning, presents as dogma what scientific scrutiny shows to be false.

I believe in science. We're going to bring back science to the state of Wisconsin.