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.

Having stared into the abyss of what it actually means for your life to be the leader of a political party, I'm just full of admiration and respect for anyone who wants to do it.

A lot of people just think I'm a big man, but I'm a basketball player. I am able to do everything that a basketball player can do - from playmaking and scoring to just passing the ball and just being a leader and post presence.

My father was a religious leader in the community, and my sister is a pastor.

America's real business leaders understand unless or until the middle class regains its footing and its faith, capitalism remains vulnerable.