Hilary Mantel

If you get stuck, get away from your desk. Take a walk, take a bath, go to sleep, make a pie, draw, listen to music, meditate, exercise; whatever you do, don't just stick there scowling at the problem. But don't make telephone calls or go to a party; if you do, other people's words will pour in where your lost words should be.

The majority of small-holder farmers in Africa are women and, in urban areas, you're primarily looking at women-led households. So we can't solve hunger if we don't have gender-sensitive programming that addresses access to opportunities for women, whether it's through education or tools for cooking, like solar-powered stoves.

I do read a lot, and I think in recent years the ratio between the amount of non-fiction and fiction has tipped quite considerably. I did read fiction as a teenager as well, mostly because I was forced to read fiction, of course, to go through high school.