"My mom and dad worked very hard to give me the best chance in - not just in golf but in life. You know, I was an only child, you know, my dad worked three jobs at one stage. My mom worked night shifts in a factory."

"My dad's a scratch golfer and I've got the knack of seeing something and then replicating it. I saw my dad swing a club and I worked out how to do the same thing. My backswing and follow-through have been basically the same since I was two."

"It is never easy to win but it is a lot easier to win when you play well. The key is winning golf tournaments when you are not playing so well. Managing your game is something that I feel that I am still learning to do."

"I receive huge support from Irish and British sports fans alike and it is greatly appreciated. Likewise I feel I have a great affinity with the American sports fans. I play most of my golf in the U.S. nowadays and I am incredibly proud to have won the U.S. Open and U.S. PGA Championship in the last two years."

"If winning isn't everything, why do they keep score?"

"The world is full of musicians who can play great, and you wouldn't cross the road to see them. It's people who have this indefinable attitude that are the good ones."

"In sport there is never any moment that is the same as the other. I have been in Formula One for 12 years, and out of that I had one year with the perfect car."

"The determination to win is the better part of winning."