I'm not a great shopper but I do buy a lot of books. I'm the publishers' friend - I buy a hundred books a year and read four.

I liked the idea of all of humanity fitting inside a sugar cube because more than 99.9% of matter is space.

I'm quite a curious person. I don't mind being the one who doesn't know things, a role I often play in QI.

I'm more inclined to linger in the science pages of 'The Week' magazine. But my principle obsessions are still watching sitcoms and football.

The principle that light can be in two places at the same time is absolutely extraordinary.

I'm not a great shopper but I do buy a lot of books. I'm the publishers' friend - I buy a hundred books a year and read four.

A foolproof plan for not getting a job - show up for your interview wearing flip flops.