"I think if you come first with a new world record, that is the best."

"I haven't done a marathon for a long time. So we'll see. I will need good luck."

"At the moment I am a little bit politician, yes. I think that could be my next step. It is not because I want power, it is because of what I think I could do for the people."

"I have to change a lot of things before I become a good marathon runner."

"Since I achieved something, running has exploded in my country. For me sometimes it is difficult even to know who the athletes are who are competing at the highest level. There are thousands."

"In the rainy season, sometimes to get to the first lesson we had to run really quick, because we had to cross the river to school and we'd have to go up and down the bank to find a place to cross because there is no bridge."

"I will always listen to my coaches. But first I listen to my body. If what they tell me suits my body, great. If my body doesn't feel good with what they say, then always my body comes first."

"My father thought sport was something fun - he didn't know it was a way to make money. Then I won a Mercedes at the world championships and I gave it to him. From the moment it arrived my father said: 'Good, you can support not just yourself but me too'."

"That is not enough. Sport has been great for me, a great learning place that if you want to achieve you can, even if you are from the poorest part of Africa."

"I used to run to school, 10k every day. And this at altitude, perfect preparation, really."

"You know, I want to help my country. Definitely I can help them, simply by winning races. Sure, they can follow my path to a good career. But for me it is not enough. I want to be more than that. In everything I want to be a role model."

"He was not a runner, my father, but he was quick. I always remember it was very difficult to escape from him when he was angry. If he wanted to beat us he would always catch us. Even me, he could always catch me."

"Eradicate poverty. This is all that matters in my country. When I am out training I think about this a lot; when I am running it is going over in my mind. As a country we cannot move forward until we eradicate poverty."

"This hand is not very active always, because it was in this hand that I carried my books. My carrying hand was always my strongest. Now I think my other hand has developed more muscles from signing all those autographs."

"What can you do if a part of it is uphill? You can't work out another route. You've just got to run the one they give you. But they tell me London is a nice course. Even the cobbles, I hope, are not very much of a problem for me."

"When we race in London a world record will be the last thing on our minds."

"This is what I wanted. They tell me that London is the best field in history. I wanted to be part of that. Because everyone will be there it will be a wonderful challenge for me. You can see the best runners, how they look, how they run. For me to beat the best is what counts."