The thing about a theory in science is it allows you make predictions. Evolutionary theory allows us to predict what apples will taste good next harvest.

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.

Sometimes, there are things is life, and they happen.

Power is not alluring to pure minds.

A lot of people understand what not saying anything means, so, in effect, not saying anything is really saying a lot.

Women, tend to talk more than men, and they do this thing where they say things that can easily be shown. Like, they don't need to do that.

The decision to overlook the seeming inequities of life instead of reacting to them is a choice.

Simply because we were licked a hundred years before we started is no reason for us not to try to win.

One must be something, in order to do something.

Who are taking to the witch burning Saturday night?

The Web is trivially simple - massively successful and its like Karaoke - anybody can do it.

Only your real friends will tell you when your face is dirty.