Once you start looking at the world rationally, it becomes much more exciting.

We as human beings like to be cocksure and certain.

I don't have any hobbies because my working job is my hobby. What I do is I spend my whole time looking through telescopes and having brain scans and buying books about various different ideas and I just sit around, that's my life.

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

Homeopaths do not have a physical brain, but merely 'skull water' with the memory of brains.

One idea I explore in my stand-up show is whether, if you try looking at the universe rationally and avoid coping mechanisms like mysticism or religion, you can still be happy knowing you are going to die after a brief time on this spinning ball.

I have spent a reasonable percentage of my life in libraries - I like the hush.