That's a central part of philosophy, of ethics. What do I owe to strangers? What do I owe to my family? What is it to live a good life? Those are questions which we face as individuals.

Sometimes we know the best thing to do, but fail to do it. New year's resolutions are often like that. We make resolutions because we know it would be better for us to lose weight, or get fit, or spend more time with our children. The problem is that a resolution is generally easier to break than it is to keep.

When diamonds' role in fuelling violent conflict in Africa gained worldwide attention, the diamond industry established the Kimberley process in order to keep ""blood diamonds"" out of international trade.

I'm not overly alarmist about it, but I do think there are some worrying signs, like the growing accumulation of wealth by a very small proportion of the population, plus elections in the US are much more dominated by money than anywhere else calling itself a democracy.

If they had a social gospel in the days of the prodigal son, somebody would have given him a bed and a sandwich and he never would have gone home.

I can't compare family to athletics.

I've spent my whole career trying to stay out of any box that anyone could put me in. 'I'm going to do a play now.' 'Now I'll do a musical.' That was my instinct. So I don't feel boxed in. But 'African-American woman' is part of my identity. I don't want to relinquish that - especially as a mother, helping my daughter find her identity.

I've always loved writing, and my heritage has been interesting, growing up in a bi-cultural family. My mother being Vietnamese and my father being French, it's like an East-West meeting in my house.