“Also, we have a strange situation where we have malnourished fat people. It’s not that we need more food. It’s that we need to manage our food system better.”

But investment in space stimulates society, it stimulates it economically, it stimulates it intellectually, and it gives us all passion.

From an evolutionary standpoint you can’t just wipe everything out and start over, and I don’t think you can do it in the school system either.

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

The Big Bang banged, and for some reason we’re here. And that’s astonishing. And that we can understand that, that’s the most astonishing.

When we sit down to draw or paint the sun’s rays, we generally use yellow because in the morning and the evening with the blue light scattered away so strongly you’re left with a little bit of red and it comes out yellowish.

Teaching creationism in science class as an alternative to evolution is inappropriate.

I say to the grown-ups, ‘If you want to deny evolution and live in your world that’s completely inconsistent with everything we’ve observed in the universe that’s fine. But don’t make your kids do it.’

Hard to find anything lovelier than a tree. They grow at right angles to a tangent of the nominal sphere of the Earth.

I want mechanical engineers to make better transportation systems. I want chemical engineers to develop better solar panels, and so on.

You start doing the addictive behavior to feel good and then your receptors get overloaded with dopamine, then you stop doing the addictive thing and some of the receptors have shut down and you don’t have enough dopamine to feel good.

That’s what makes a human a human, if we store information outside our bodies.

Talk about science with everyone you meet. Especially talk about climate change. It needs to become a part of our everyday conversation (the way it is everywhere else in the world).

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

I say to the grownups, if you want to deny evolution and live in your world, that’s completely inconsistent with the world we observe, that’s fine. But don’t make your kids do it. Because we need them.

There are just two people entitled to refer to themselves as “we”; one is the editor and the other is the fellow with a tapeworm.

Educated women have fewer kids. And the kids they do have are better cared for and are more successful. As I like to say, it’s not one thing that we need to focus on. It’s everything all at once.