My approach works not by making valid predictions but by allowing me to correct false ones.

Most of the poverty and misery in the world is due to bad government, lack of democracy, weak states, internal strife, and so on.

The US needs a cap and trade system with auctioning of licenses for emissions rights. The revenues from these auctions can be used to launch a new, environmentally friendly energy policy. That would be yet another federal program that could help us to overcome the stagnation.

Who most benefits from keeping marijuana illegal? The greatest beneficiaries are the major criminal organizations in Mexico and elsewhere that earn billions of dollars annually from this illicit trade - and who would rapidly lose their competitive advantage if marijuana were a legal commodity.

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.

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

I think there's a lot of merit in an international economy and global markets, but they're not sufficient because markets don't look after social needs.