I think my primary audience is in some sense an adult audience, because I think that will then have a knock-on effect for children.

You know, I'm not terribly fast at my times tables, because that's not what I think mathematics is about.

The stage is like a laboratory where you can run theatrical experiments, imposing interesting conditions on the cast or story and seeing how they pan out. Each new play is like creating a tiny virtual universe enclosed by the confines of the stage.

The power of mathematics is often to change one thing into another, to change geometry into language.

Mathematics is a place where you can do things which you can't do in the real world.

I think my primary audience is in some sense an adult audience, because I think that will then have a knock-on effect for children.

The best mobile phone had the best mathematician. They know how to fit a huge amount of data into a small amount of space. How to do things efficiently, how to do them cleverly.