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

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.

I'll tell you what I'd do if it were up to me: I would establish a strictly controlled distribution network through which I would make most drugs, excluding the most dangerous ones like crack, legally available. Initially I would keep the prices low enough to destroy the drug trade. Once that objective was attained I would keep raising the prices, very much like the excise duty on cigarettes, but I would make an exception for registered addicts in order to discourage crime. I would use a portion of the income for prevention and treatment. And I would foster social opprobrium of drug use.

The world order needs a major overhaul.

It is much easier to put existing resources to better use, than to develop resources where they do not exist.

The integration of Europe was very much led by a Germany that was always willing to pay a little bit extra to reach a compromise that everybody accepted, because Germany was so eager to get European support for reunification. That was called the "farsighted vision," which created the European Union.

Making an investment decision is like formulating a scientific hypothesis and submitting it to a practical test. The main difference is that the hypothesis that underlies an investment decision is intended to make money and not to establish a universally valid generalization.