The Earth is flat, 100 per cent.

There's no proof of the Earth's curvature and this fake space agency Nasa use CGI images and every one is different.

When someone like Richard Branson goes up there and starts doing chartered flights... and you can look back on Earth and see the Earth's curvature, I'll believe the Earth is a globe.

Your fitness is your ability to recover and you can't recover when you're old.

It might sound strange now from where I'm standing as a world boxing champion, but I harboured serious thoughts, at the age of nine, of putting my whole life into snooker. I remember being fascinated by the game, watching the likes of Steve Davis, and thought I would do it.

I watched Sly Stallone and the 'Rocky' movies over and over again. They were fantastic.

I always wanted my job to be something I that loved doing.

I was 5ft 3in tall until I was 17. Then I suddenly shot up.

I haven't had the recognition I deserve. You can go back to anybody's career - Ricky Hatton, Joe Calzaghe, David Haye, Amir Khan, Chris Eubank, Nigel Benn, Steve Collins, Naseem Hamed. My record is better than all of theirs. I've won against more unbeaten fighters than any of them, had more exciting fights.

When people retire, they should stay retired.

I don't hype a fight to sell tickets.

I say that I'm genetically gifted. In a weight-governed sport, I don't put weight on because of my Polish 'heritage, it's genetic. Even when I am not in training, I don't put on weight. When I start training, I don't need to take a lot of weight off.

If Mikkel Kessler thinks I'm going soft just because I'm a dad then he's the one who's gone soft in the head.

I don't look at my opponent's eyes in the ring. I watch his gloves so that I can block or avoid his punches.

I've kept improving in many ways. Boxers evolve with experience.

There's something weird about me the way even the biggest punches to the jaw don't wobble me, but if you can avoid being hit too often, so much the better.

Closer to a fight, I can really feel my heartbeat in my chest. I can hear it beat through my mouth, this 'gunk, gunk, gunk' rhythm.

Boxing's a bit like the Army, nine out of 10 people come out as pretty nice people. It taught me self-worth, to respect my elders and what the right thing was to do. As a result, I don't think I even got a single detention at school. It helped me to be good.

I never cheated on nutrition, I always had a really good diet and I always supplemented well - that's a massive factor in any sport. Even in everyday life, if people are just going to the gym recreationally, they'll have targets in mind and if you're not supplementing correctly or concentrating on your diet, you're wasting your time.

I'll never be able to replace the feeling of standing victorious in the ring, that's never going to happen again and I'm never going to fight again.

I don't actually think boxing is a particularly dangerous sport, I wouldn't even put it in the top ten of dangerous sports, but that's only if you take it seriously. Whenever I stepped into the ring I was well hydrated, I was at the right weight and I was prepared. It wasn't a dangerous sport for me.

I won four world titles, got beat twice - but avenged one of those losses - and the other loss was on points to someone who was unbeaten in Andre Ward. I had a comfortable, successful career and it wasn't through natural ability but through dedication and hard work.

The only person in the world who could knock me out is my anaesthetist.

Sometimes big boxing matches should take place on the cobbles. That's really where Mikkel Kessler and me ought to have sorted it out.

Make no mistake, the days and hours before going into the ring can be stressful for any boxer. The bigger and tougher the fight the greater stress, But if a boxer knows he's stepping out of his league it's even worse.

Sparring is not as tough as a fight.

I don't need to do that many weights but every now and then I do the bar, with 25-30 kilos on either side, which amounts to roughly probably my body weight. I lift this up above my head, then drop it and lift it up again.

You can improve your punching power, but only to an extent. If you can punch hard, then it's just god-given, that's just nature, not nurture and there's not much you can do to develop punching power.

I've been in the ring with big-muscled heavyweights and cruiserweights, who couldn't punch the skin off a rice pudding, and then I've taken on light welterweights and light middleweights, and they hit hard, and you can see they're not trying.

What I will say though is that I've got quite a big back, from doing pull-ups, and that will make your punches more solid. But in terms of the hardness of your punch, it's about timing and speed.

When good fighters fight, they often make predictions. It's all part of the media hype beforehand.

I can say, 'right, I will stop this kid in round five.' If I am good enough to do that then fair enough. I don't gamble but my brothers and my friends, they did quite well off it.

If Jermain Taylor was a bit fitter and he had a bit more steam in the tank towards the end, he might have survived and won on points, but he didn't have any energy left in the tank, because I sapped it out of him. I absolutely punched holes in him for the last three rounds.

Andre Ward beat me fair and square on points in a boring fight, a dull affair. Same as when he beat Kessler. Headbutted him to bits, but he knows how to win. He wins ugly, but he knows how to win.

People have been upset in the past about pay-per-view fights because they got sold a lie or an illusion that was not real.

Apparently, we've been to the moon in 1969, 1970. We've been there six times, I don't believe a word of it. Some people do.

You manage your injuries if you're serious about fighting.

I've had an operation on my knee, two operations on my hand, injuries on elbows and stuff but you get through it.

The Golovkin thing came up and I said 'fight me at 172lbs and I'll think about it' and he wanted me to go down to 166. He wouldn't even come up to super-middle and I was already retired by that point.

Golovkin cannot win a fight against me, he's not big enough.

I had a lot of rematches in the amateurs. You don't always know what an opponent's going to do. I do find that I beat them more easily second time around.

A fool can never be made to question his own wisdom. And George Groves is very foolish. He believes his own nonsense. He cannot stay with me for 12 rounds. He's not tough enough.

Your body releases a natural endorphin when you're fighting. You don't feel pain.

I'm a fighter.

I don't think there is anything more proud or glorious than standing in the arena as a fighter - that you've done it in on your own. That's why I love fighting.

No sport is more geared to the warrior's code of honour, pride and respect. That's why I love boxing. It's mano a mano. One against one. It's driven by fear and your need to conquer it.

I'm involved in fight of the year nearly every time I fight because I put it all on the line. I don't look to keep out of the way and nick a decision.

I'm a very proud warrior and with that mentality comes great fights: especially when I'm in with opponents that mean business.

I don't want to be the country's best-kept boxing secret. I want to cross over from being a boxer on the back pages to the front pages and become the big superstar I deserve to be.

It's not ideal; I don't want to get a bad decision. If I win the fight, I expect to get my hand raised at the end of it. But, if people see it's a bad decision, it gets sorted out. You get another shot, or you fight someone else at the top level.