When girls are asking themselves 'Who am I?' for the first time and they hear all this bad PR about math, they think, 'Well, whoever I am, I'm not somebody who likes math.'

I think the question is who am I? That's what we all should be asking ourselves. Who am I? Well, if I am first a Christian conservative then that dictates my response to all questions so my response first as a Christian conservative is to vote consistent with my value system.

At least when you're acting you can be someone. In front of the camera you have to be yourself. And who am I?

I had the good fortune of speaking with Orson Wells many decades ago and he said 'Success is primarily luck anyway.' And I have been very lucky. Of course, Orson Wells was enormously talented and brilliant - so who am I to argue with him!

There are so many things to think about when you make an album. Like, who am I trying to impress? Am I going to get respect, critical acclaim? Or am I going to sell lots of records?

I never want to sell my soul for something I don't believe in. Because guess what? Somebody somewhere in the world would have believed in that part and should be playing it - who am I to not allow that person that opportunity?

There's something safe about playing a character, but then it's like, 'Who am I underneath it all?'

A lot of nerds aren't aware they're nerds. A geek has thrown his hands up to the universe and gone, 'I speak Klingon - who am I fooling? You win! I'm just gonna openly like what I like.' Geeks tend to be a little happier with themselves.

Every teenager feels like a freak. It's part of being a teenager, part of the individuation from child to adult - those teenage years are who am I? What am I? Where am I going?

If one person reaches out to me, who am I not to reach back? Even if it takes me a year to reply, they do get that message and they feel it.

So the point is, I don't have a right to tell anybody what's right or wrong about their lives. Who am I to tell you at any given moment of the day what would be right for you?

One night I went over to get some dope from some Hollywood tough guy. After I left, my son Scott, who was only fifteen, went over with a baseball bat to kill him. I was laughing out of one eye and crying out of the other. I thought, Who am I kidding?

When I realised that I had feelings for men as well as women, at first I was worried and frightened, and there was a certain amount of 'Who am I? Am I a criminal?' and so on. It took me a long time to come to terms with myself. Those were painful years - painful then and painful to look back on.

I'm not interested in who am I. I'm interested in what's gone, the disinheritance, what I've been able to become or learn or fuse with or not fuse with. A certain freedom comes... I like it that way.

All my life, I have taken inventory at intervals. For example, when I became a movie actor and suddenly I had to deal with fame, money and playing so many roles, I lost myself. I said, 'Who am I?' And I wrote my first book to deal with that, 'The Ragman's Son.'

I went to a friend's 40th in Manchester, and there was a karaoke machine, and no one was having a go. My mate said, 'No one's singing because you're in the room.' I said, 'Who am I, Frank Sinatra?' They made me sing flipping 'My Star' to a backing track that sounded like '80s Roxy Music. It was pretty embarrassing, but I did it.

Oh, who am I trying to kid? It's a madhouse. The minute those cameras go off, things just explode, everyone is just at each other in one way or another, in closets or cat fights here and there. It's nuts. You know, I can't be a part of it.

My identity was a big issue when I was a teenager, and I had a lot of questions, like: 'Who am I?' 'Who do I belong to?' But when I was still quite young, I decided that belonging is a tough process in life, and I'd better say I belonged to myself and the world rather than belonging to one nationality or another.

Religion survives because it answers three questions that every reflective person must ask. Who am I? Why am I here? How then shall I live?

Where would I be without baseball? Who am I without baseball?