I do always look back and feel faintly embarrassed by anything I've done in the past. I think that's not a terrible thing, because if you don't do that, how are you growing and moving forward?

When you're with your partner, I think, does everyone else sing and do the stupid voices and all that stuff that I do and always have done?

I was in Leeds, just starting out, and I was hypnotising one person up on stage. Suddenly I had members of the crowd unsuspectingly go to sleep on me as well.

I was a Christian when I was young and didn't know any better.

What I do is rooted in magic - it's got a big foot planted firmly in conjuring, even if the other foot's planted in psychological techniques.

Magic's quite a solitary pursuit - a thing you can do for hours and hours, getting better and better.

And the nature of magic is all in the person's experience. Whether the magician is using a highly complex sleight of hand or he's just got two cards that are the same, it doesn't matter: it's how it's sold and how magical it is for the person that matters.

If people have very big personalities, I find myself feeling I have nothing to offer.

I was part of a very uncool group. It was a group that liked classical music. They were known as the Music School Gang or, less charitably, the Poof Gang.

Things I've done in the past always make me cringe a bit. When I think back to being a Christian. Proselytising to people, that makes me cringe.

I'm a British psychological illusionist, which is a term I made up, but I do these kind of mind-reading and psychological experiments. There's nothing magical about it at all.

If you do magic, it's the quickest most fraudulent route to impressing people.

The stuff that I do and enjoy is normally quite similar to a lot of the stuff that psychics and spiritualists would enjoy themselves. I just have a different approach to wanting to find out how things really work, or a sense of, I guess, responsibility about honesty and so on.

People are just passively accepting what you tell them, so if you are on TV there is that greater responsibility to be true.

I think you can be sceptical, and still do things that are in a joyful way, and ultimately you are on stage entertaining. If you let your philosophy get too much in the way of that, then you are failing as an entertainer.

I have got friends that I have got to know and found out that, the first few times I was with them, they were just thinking that everything I was doing was some kind of weird mind game, which is hysterical, really, because I couldn't be any less like that.

A bedrock of insecurity made me want to impress and want to be the center of attention.

I wasn't terribly sociable. I had two or three friends at school. I drew things, played with Lego. My parents left me free to do whatever made me happy.

Relationships are very good at making you more conscious of yourself. Especially as you get older, you develop a crust around your madnesses and shortcomings that take someone else to recognize them.

I think the sheer hell of trying to get a film made; I don't know if it would ultimately be worth it. The sort of format that I have, these TV things, sit somewhere between documentaries and reality shows and entertainment shows and dramas.

People often think that you get the most of everything from having your face on the screen but its really, like musicians, when you hit the road. It's also where the most fun is, the adrenaline of it every night, giving this incredibly well rehearsed charismatic version of yourself every night and people hopefully loving you.

The joy of doing the TV or something like 'Sacrifice' isn't really the process of doing it; the joy is going through this real-life experience.

If you're a comedian, it's a bit of a choice whether or not you want to be funny when you're not performing because it might feel disingenuous. In the same way, I don't show people magic tricks in social situations any more.

I'm probably more persuasive than the next person if I want to be, but do I want to be? In my head, I just don't go there.

I remember Doritos launched a new flavour and the question was whether I could use my skills - as they perceived them - to make people desire and want to try this new flavour. But I like to be in control of the things I do and feel proud of them.

Glenn Close is my favourite actress and she came to see the show in London once which was giddying.

I like films that sort of play out in one confined area. Films that have a feeling that you're watching a play, a contained environment and a creeping tension.

Not everything is about causing controversy. That would be a very boring way to go.

When you're made to be frightened within a safe context, like watching a horror film, you have that tension/release which triggers all those happy chemicals that feel good.

I think it's important to be sort of nice.

In my 20s, I just had to be the centre of attention all the time. I was quite eccentric.

I had no sense of 'Gotta work hard to be famous.' Never have done, and still don't.

When we find ourselves in groups or with charismatic individuals, we might do things we wouldn't ordinarily do.

I'm very interested in how we take ownership of our own stories and our own lives.

I like to eat other people's food in restaurants.

I never really enjoy the thought of fancy dress.

I was allowed to do whatever made me happy. I can't think of a better or more worthwhile approach to parenting.

The Stoics appear during a huge time of constant wars and real political strife. And it became very popular, I think, because it's a way of distancing yourself from strife and keeping your centre of gravity within you.

I really liked 'Heist,' and that seems to be a popular favourite, but I think my personal favourite was 'Hero at 30,000 ft,' about the guy who ended up landing the aeroplane.

I'll sometimes go a week or two without tweeting, and then when I'm in the mood, tweet loads, and clog up people's in-boxes. It's a moment when you feel like sharing something.

If something's stressful I've always tended to just find ways of avoiding it rather than rising to meet it or try to change it.

As a performer you often feel that you're the child and everyone else is a grown-up.

Guilt's too strong a word, but there is this niggling worry that I'm a grown-up doing a childish job and it would be nice to do something more useful and to reach a number of people with an idea you think is important.

You have to realise that hypnosis doesn't exist: it just works on people's natural suggestibility, their expectations and capacity to unconsciously role play. You can't make someone do anything they don't want to do.

Clearly if a hypnotist could make someone to steal £100k just by telling them to, the world would be a different place, and I suspect that hypnotists wouldn't bother doing shows in pubs or dodgy Spanish holiday resorts.

I am a movie geek, yes!

When I was at University I had a sort of fear about going to the gym and that kind of blokeish environment, which was rooted in a feeling of total inadequacy, which is what fear is.

I came across the idea of running towards the things that frighten you. Once you go and do it, you realise that the fear of it is far more powerful than actually doing it.

Since turning 40 I happily moisturise - I have what's called a regime - but I'm always in two minds because I have no idea if I'm completely wasting my money. They feel nice when they are on but I can't stop wondering, 'Am I succumbing to the same nonsense I try to fight against in other areas?'

I went to a party when I was a student and they had a mynah bird up in the bedroom where people put their coats. I was completely captivated - I just sat there all night talking to it. The next day I passed a pet shop and they had a conure - it's a little parakeet - in the window. I bought it, not knowing what it was or how to look after it.