The problem in this world is to avoid concentration of power - we must have a dispersion of power.

The important issue is not how much inequality there is but how much opportunity there is for individuals to get out of the bottom classes and into the top. If there is enough movement upward, people will accept the efficiency of the markets. If you have opportunity, there is a great tolerance for inequality. That has been the saving grace of the American system.

Inflation is always and everywhere a monetary phenomenon.

Germany cannot get out of the euro. What it has to do, therefore, is make the economy more flexible - to eliminate the restrictions on prices, on wages and on employment; in short, the regulations that keep 10 percent of the German workforce unemployed.

China has seen a great deal of economic progress. It's certainly rather of a miracle. The growing role of the market in the economy will force China to open up its political system over time and to move toward a more democratic society. So taken as a whole, the one real failure in this whole business has been Russia.

Self-interest is not myopic selfishness. It is whatever it is that interests the participants, whatever they value, whatever goals they pursue. The scientist seeking to advance the frontiers of his discipline, the missionary seeking to convert infidels to the true faith, the philanthropist seeking to bring comfort to the needy - all are pursuing their interests, as they see them, as they judge them by their own values.

Why is it that private insurance companies are not in trouble because people are getting older? Aren't they subject to the same demographics? The difference is that they've accumulated a fund, not a pay-in, pay-out system.