The assumption of perfect knowledge is very far from reality ... a lot of the evil in the world is actually not intentional.

I used to be opposed to the idea of social entrepreneurship. I said, you know, let business be business, and philanthropy be philanthropy. Keep the two separate, don't mix it up, and this is what I did, and I did that rather successfully, but I now recognize that actually you do need to mix it up and I think there is room for social entrepreneurship.

My main concern is with the world order

Taking this view, it is possible to see financial markets as a laboratory for testing hypotheses, albeit not strictly scientific ones. The truth is, successful investing is a kind of alchemy.

President George W. Bush is endangering the United States and the world's safety while undermining American values.

I fancied myself as some kind of god or an economic reformer like Keynes

If every rich person gave 50 percent of their wealth to charity, I would not say they should pay more taxes.