Joe Calzaghe

I've fought in Copenhagen before, and it's not the most hostile place in the world.

Boxing's a very lonely sport. That ring is the loneliest place in the world.

It's unbelievable when I think back to when I was a kid that one day I would have achieved so much through boxing, and to think my teachers laughed at me when I said I was going to be a boxer.

You ask all the super-middleweights: Who is the best fighter in Britain? If I came back, it would be me.

If I'm greedy and keep chasing the money, it's inevitable I will be beaten one day.

I swore to myself that I was never going to lose again, and that's what drives me still. More than money, more than titles, more than fame, it's the desire not to be defeated.

We had nothing, no money, when I was young. We lived in a council house. My dad struggled; my mum struggled. But that made me what I am. If I had everything on a plate from the start, maybe I would not have been a champion for 11 years.

Ideally, it would be nice if you could earn enough money to kick on from boxing and use the finances to start a business. Realistically, that doesn't happen.

Being retired is one thing, but staying retired is another. Even when I announced my retirement, I'm sure people thought I was going to come back.

There is a world of difference between being a reality TV star and a world champion boxer.

To win the four major title belts, to be the unbeaten champion and 10 years a champion - it's amazing. I'm so proud.

I am not an aggressive person. I am a disciplined, chilled, and relaxed guy.