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.

Privacy about giving is counterproductive. There is solid scientific research showing that people are more likely to give if they can see that others are giving. The richest people, in particular, should be setting an example.

Divorce is one of the most financially traumatic things you can go through. Money spent on getting mad or getting even is money wasted.

They say Yogi Berra is funny. Well, he has a lovely wife and family, a beautiful home, money in the bank, and he plays golf with millionaires. What's funny about that?

I think anybody who wants to be president has to be a politician, but I would like to find somebody who's coming from a loving place instead of a political place.

I didn't think we would ever make enough money to pay rent by playing music.