I thought I better warn you that I am not one of those politically correct comedians, but it turns out that also I'm not really that racist, homophobic or woman hating either, so you might not notice

I am not man or beast; I am bibliosexual, and a seedy bibliosexual who haunts the streets, laden with carrier bags held by blistered fingers, stooping under the weight of the rucksack that has brought on sciatica and a Dickensian demeanour.

Wherever you are on Earth, there is more life present than in the rest of the known universe.

I want to create shows which are interesting. I hope that some people are excited by some of the ideas.

You always need to find the balance in the science, but the balance to talking about evolutionary theory is not to talk about creationism, that's not a balance, that's misleading and it's just wrong.

If the Royal Variety Show was put in a matter transportation machine with the Royal Institution Christmas lectures, this is what you'd get.

Not since Jimmy Carr have I seen a cold computer programme on stage generate so much laughter.