I didn’t realize that scientists were like that, and that people were like that. I would have thought — and I like to hope — that I encourage people rather than discourage people. I think you can say no and still say, “Boy, that might be a tough problem, but if you really work at it maybe you’ll solve it,” rather than, “No, it will never happen.”

Don’t romanticise your “vocation”. You can either write good sentences or you can’t. There is no “writer’s lifestyle”. All that matters is what you leave on the page.

And it brings us to the debate that has been going on here: aid versus private sector, aid versus trade, etc. And someone stood up to say that one of the frustrating things is that it's been a simplistic debate. And that's not what the debate should be about. That's engaging in the wrong debate. The issue here is how do we get a partnership that involves government donors, the private sector and ordinary African people taking charge of their own lives? How do we combine all this?

Yes, but not with a formula. So there are many, many efforts now to decentralize and they create a rigid formula and give people rules from on top and say, 'Now it's yours.' And that isn't worked very well either. … And, you think about the variety. If you look at a countryside, think of the variety out there in terms of the ecological variety. Well, if people are going to manage ecological variety, no single set of rules will work in a semi-arid versus a tropical-wet region. They have to be different.

What kind of talent I had when I was really young was that I was able to concentrate on something for a really long time. My interest didn't really wane...That's been my main advantage. I've never been the one to grasp things the quickest, but I never stopped learning as soon as I became interested in a subject.

I would want to be a role model. As you talk about an athlete who wakes up at seven every day, then you have two training sessions...for me, it's not like that. I definitely think about chess all the time. I work at chess every day but it's not like I have a routine. It's always been based on inspiration for me. Fortunately, I haven't run out of inspiration yet...Sometimes I play better when I haven't slept that much, because you kind of play more creative.