Evolution is not something you can believe in or not believe in like do you believe in gravity.

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.

Eyes shows lies.

I can't complain about my life. I have a really nice life. I have a great family and I live in a gorgeous part of the country.

A man who writes well writes not as others write, but as he himself writes; it is often in speaking badly that he speaks well.

Help your sister's boat across the water, and yours too will reach the other side. Kindness can become its own motive. We are made kind by being kind.

I tend to be naive and gullible, I guess, but I try to believe that governments believe what they say.

That's one of the most bold smacks in the face in this country. It's a way to say, "Look, we just don't even care about you," the price of healthcare in this country.

Love is born into every human being; it calls back the halves of our original nature together; it tries to make one out of two and heal the wound of human nature.

The most important thing people did for me was to expose me to new things.

On a daily basis, jeans and t-shirt is still sexy, but it doesn't look like you're trying too hard.

All the world's a stage ... and you better have a zoning variance or it's coming down.