A model is such a fascinating toy that you fall in love with your creation.

I think the biggest misconception is that everybody has to learn mathematics. That seems to be a complete mistake.

The point of fact is, just in simple ways, you can see how much better things have gotten. I mean, when I was a child, I lived in England, and England was just amazingly polluted. We didn't use that word. We just said it was it all covered with soot.

When I listen to the public debates about climate change, I am impressed by the enormous gaps in our knowledge, the sparseness of our observations and the superficiality of our theories.

Mathematics is really an art, not a science.

I think that the artificial-intelligence people are making a lot of noise recently, claiming that artificial intelligence is making huge progress and we're going to be outstripped by the machines.

CO2 is so beneficial...it would be crazy to try to reduce it