Unbridled capitalism will lead to some very real problems.

I don't think it's time yet to eliminate cash, but I propose having a less-cash society, not a cashless one.

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

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

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.

... far more people make a living as professional chess players today than ever before. Thanks partly to the availability of computer programs and online matches, there has been a mini-boom in chess interest among young people in many countries.

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