I tell my children that a man like Bill Gates has a personal fortune of $100 billion. They can't even comprehend that. Then I explain that he has more money than some countries.

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.

The Indians and Chinese have become brilliant chess professionals. They get on a plane and play all over the world. This has led to dramatic pressure on incomes. Nowadays, the best chess player in Argentina can no longer make a living playing chess.

Marx's theory that only capitalists benefit from capitalism and workers are exploited was completely wrong. Nothing could have been further from the truth. Workers earned more as economies grew.

Russia depends on natural resources way too much. Russian economy is not diversified enough

I think that a lot of the money - these big bills - is used to facilitate tax evasion and crime.

We Americans are not about to stop borrowing as long as they give us money for nothing.