We're full of electricity, and the walls and floor of a building contain carbon - the same makeup as a video tape - and I think we give off a huge amount of energy. Some people are able to see that and pick that up. I think almost every person I've met in my life has had some sort of experience that they can't explain, and those fascinate me.

I've always been much more scared of the living than I am of the dead.

Police do get obsessed with solving crimes. You know, particularly if there's been a murder, it becomes personal for the police officer very quickly, and it gets to the family. Even after they've retired, they carry on, not letting go.

Life's not some slot machine in an arcade with a sign that flashes up saying 'I'm sorry, you have been killed. Would you like another go?' But we might get put through the same test each time, get faced with the same situations until we've learned how to cope.

If you talk to any cop, however hardened, and say, "Has anything that's ever bothered you", they'll tell you about the death of a child that they had to deal with.

My day starts with Radio 4's Today live or 'listen again' wherever I am in the world, thanks to digital radio - I even have an app on my iPhone that receives it.

If you and I took a walk down a shopping street in Jo'burg or Cape Town or London, we see two guys looking in a shop window, we think, "Oh, they're wondering what they're going to buy." A cop looks at them and thinks, "Why are they standing there? Are they doing a drug deal? Are they going to mug someone? Are they going to rob the shop?"