If you can make yourself symmetrical, you're sending out a sign that you've got good genes, you've got a good upbringing and therefore you'll make a good mate.

Theory is needed to tell you where to look.

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.

Its my belief that you can take everyone down a logical path if you take them slowly enough, and the trouble is that mathematical brains can get scrambled a little bit on the way. You get a bad teacher, it messes you up for the rest of the journey.

I think science is a foreign land for many people, so I think of my role as an ambassador's job.

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.

Primes are the atoms of the arithmetic - the hydrogen and oxygen of the world of numbers