The most serious problem facing humankind is climate change.

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.

Two brothers. Two different worlds. Different mothers, of course. Did that explain it? Women usually explained everything.

He was the mildest manner'd man That ever scuttled ship or cut a throat.

I’m actually pale blue: it takes me a week of sunbathing to turn white.

Money will not purchase character or good government.

Every Vacation movie didn't just make the studio money. They each made the studio a lot of money.

Life had not taught me to distrust ministers, but it had taught me to trust no one more than dogs.

Too much free time is certainly a monkey's paw in disguise. Most people can't handle a structureless life.

To be perfectly original one should think much and read little, and this is impossible, for one must have read before one has learnt to think.

Music means freedom to me. But in acting you can pretend to be someone else and I like that.

Individualism is going around these days in uniform, handing out the party line on individualism.