“Some people take defeat and losses a certain way. You see how some fighters take losses.”

Nobody is my boss.

I love money because I’ve earned it. I won sixty G’s with my first knockout – and the week before, I was collecting social welfare.

When you’re faced with an opponent, the media asks the questions, and I answer truthfully. I don’t hold back.

You might be tough, but you can only be so tough for so long, you know what I mean? The brain can only take so much damage. The body can only take so much damage.

I am not afraid of saying something and going and pursuing it. That’s it. I see it in my mind. I say it out loud. I go and do it.

I used to pretend that my Peugeot driving to the gym in the rain in Dublin was a Ferrari on the Vegas strip.

I believe in believing. My coach John Kavanagh is a big atheist, and he is always trying to persuade people to his way of thinking, and I think, ‘What a waste of energy.’

When I prepare, I am not messing around. I find the right places, the right people, and the right environment. Iceland is one of those places.

There’s people that tried to celebrate when I lost that got nothing to do with it. That’s not the sign of a champion.

It could be if I fight in front of one person or one million people. It’s still the same emotions.

I like to look good, my friend.

I’m in the game of spinning plates. I’m spinning a boxing plate. I’m spinning a Tae Kwon Do plate. I’m spinning a Jujitsu plate. I’m spinning a freestyle wrestling plate. I’m spinning a karate plate. If I was to put all them down and have one boxing plate spinning, it would be like a load off my shoulders.

I’m going to change the way martial arts is viewed. I’m going to change the game. I’m going to change the way people approach fighting.

I enjoy competition. I enjoy challenges. If a challenge is in front of me and it appeals to me, I will go ahead and conquer it.

You might win some, you might lose some. But you go in, you challenge yourself, you become a better man, a better individual, a better fighter.

I sleep people. I put people unconscious. I’m stating facts.

We are more than just flesh and bones. There’s a certain spiritual nature and something of the mind that we can’t measure. We can’t find it. With all our sophisticated equipment, we cannot monitor or define it, and yet it’s there.

It would be foolish, in forming our expectations, to attach great weight to matters which are very uncertain.

There is a time for departure even when there’s no certain place to go.

I don’t believe in “original sin.” I don’t believe in “guilt.” I don’t believe in villains or heroes – only right or wrong ways that individuals have taken, not by choice but by necessity or by certain still-uncomprehended influences in themselves, their circumstances, and their antecedents.

Am I going to get my warts removed? I might do, but I’m certainly not going to auction them on the Internet.

Women are not going to start businesses because we tell them we don’t have enough people of a certain group.

I’ve never had any illusions about being a lead actor in films, because lead actors have to be of a certain kind. Apart from the beauty of looks and figure, which I cannot claim to have, there’s just a particular kind of ordinary-Joe quality that a film star needs to have.

I observed certain animalcules, within whole bodies I saw so quick a motion as to exceed belief; they were about the size of a large grain of sand, and their bodies being transparent, that the internal motion could plainly be seen.