I've always loved airplanes and flight. The space program was really important to me as a kid. I still have a photo of Armstrong and Aldrin on the moon in my living room.

Everyone you will ever meet knows something you don't.

We are just a speck, on a speck, orbiting a speck, in the corner of a speck, in the middle of nowhere.

To leave the world better than you found it, sometimes you have to pick up other people's trash.

Science is the best idea humans have ever had. The more people who embrace that idea, the better.

You and I are made of stardust. We are the stuff of exploded stars. We are therefore, at least 1 way that the Universe knows itself. That, to me, is astonishing.

There's nothing I believe in more strongly than getting young people interested in science and engineering, for a better tomorrow, for all humankind.

I speak with dogs frequently. They don't really talk, but I feel they're communicating.

The natural world is a package deal; you don't get to select which facts you like and which you don't.

The more you find out about the world, the more opportunities there are to laugh at it.

Science is the best thing humans beings have ever come up with. And if it isn't, science will fix it.

Books aren't written, they're rewritten. Including your own. It is one of the hardest things to accept, especially after the seventh rewrite hasn't quite done it...

Now public business takes up so much of my time that I must get time a Sundays or a nights to look after my own matters.

I've been writing a lot of songs in twos, songs that are like twins in my mind.

The less I needed, the better I felt.

But the feeling I have, you know, is that I'll never come close to reading all, or even a thousandth- a billionth- of the books I'd probably love if I ever got to them.

Blacks are about seven times more likely to live in neighborhoods of concentrated poverty than whites.

There is no fool like an educated fool.

Politics is quite draining. There are so many heated discussions and press conferences to cover during a convention.

Most parents don’t know really their children.

The nightmare Life-in-Death was she.