It's quite astonishing how much money people make in the hedge fund business and in the private equity field, and how well-off affluent families really are.

It comes as no surprise that average Americans have a different perception of the economy than (US President) George W. Bush and his friends. They can play around with statistics as much as they want, but it's clear that we have an unfair distribution of wealth.

If you didn't have employers able to pay off the books and off the record safely in cash, you wouldn't have illegal immigration on nearly the scale that we do.

Why are oil prices so low? First, energy consumption growth rates in developing markets have decreased. This is particularly noticeable in China. Second, new technologies are being developed and the shale gas revolution in the USA has taken place

Unbridled capitalism in the United States can't be sustained socially. It leads to tensions.

Today, chess programs have become so good that even grandmasters sometimes struggle to understand the logic behind some of their moves.

We all use cash in our everyday life, but we don't use hundred-dollar bills. We're not using 500-euro notes. And yet these account for mountains of cash out there. I think they're being used in tax evasion and by criminals of all types.