Clinton is a big personality who has led a big life, and for some of the media conventional wisdom to boil it down to a view that 'all people are really interested in' are a few moments of madness in the Oval Office gets him, the importance of the presidency, and the significance of his life, all wrong.

My dad, Donald, was a vet and had a practice in Yorkshire. Cats and dogs were his bread and butter, but his greatest love was large animals.

Tony's [Blair] convinced I'm going to find God. I do have spiritual moments, but I don't think it's God.

I feel like thanking Paul Dacre every time, because the reason they ask me is because they think I've come through the other end with a pretty good reputation. Loads of people get a bad press but have a good reputation. [David] Beckham - think what he went through. [Bill] Clinton, likewise. You just have to be true to yourself.

I remember talking to Alex Ferguson about Tony [Blair] and Gordon [Brown], and he said: "Why doesn't Tony just get rid of him?" But if you sack someone in football, they can't turn up to training the next day. In politics they're still on the pitch. Gordon would still have been a big player.

I'm certainly driven, I hate losing, I can be ruthless and short-tempered and terribly competitive.

Friends have suggested that I am the least qualified person to talk about happiness, because I am often down, and sometimes profoundly depressed. But I think that's where my qualification comes from. Because to know happiness, it helps to know unhappiness.