I always say when you see that old black-and-white footage of the rocket on the launch pad and it falls over and explodes, that's because people had slide rules. Not having the decimal point is a real drawback. You want the decimal point, take it from me.

Climate change is happening, humans are causing it, and I think this is perhaps the most serious environmental issue facing us.

One of the drawbacks of English is you can't spell things by hearing them.

There are two questions that get to us all: Are we alone in the Universe? And, where did we come from? For me, science provides a much more satisfactory way to seek answers than does any religion I've come across. With that said, the universe is mysterious and wonderful. It fills me with reverence for nature and our place among the stars; our place in space.

I like to regard myself as someone who's capable of critical thought, that is to say, who can evaluate claims.

The US Navy has several people on every ship that can navigate by the stars. They don't fool with that.

My father was a very good Boy Scout. He was very skilled with knots, and he showed me how to tie a bow tie.