People 'over-produce' pollution because they are not paying for the costs of dealing with it.

It takes time and experience to absorb new technologies, so technologically backward producers need a period of protection from international competition during this period of learning. Such protection is costly, because the country is giving up the chance to import better and cheaper products. However, it is a price that has to be paid if it wants to develop advanced industries.

95 percent of economics is common sense made complicated, and even for the remaining 5 percent, the essential reasoning, if not all the technical details, can be explained in plain terms.

Gore Vidal, the American writer, once described the American economic system as 'free enterprise for the poor and socialism for the rich'. Macroeconomic policy on the global scale is a bit like that. It is Keynesianism for the rich countries and monetarism for the poor.

Equality of opportunity is not enough. Unless we create an environment where everyone is guaranteed some minimum capabilities through some guarantee of minimum income, education, and healthcare, we cannot say that we have fair competition. When some people have to run a 100 metre race with sandbags on their legs, the fact that no one is allowed to have a head start does not make the race fair. Equality of opportunity is absolutely necessary but not sufficient in building a genuinely fair and efficient society.

To paraphrase Winston Churchill, capitalism is the worst economic system except for all the other forms.

The widely accepted assertion that, only if you let markets be will everyone be paid correctly and thus fairly, according to his worth, is a myth. Only when we part with this myth and grasp the political nature of the market and the collective nature of individual productivity will we be able to build a more just society in which historical legacies and collective actions, and not just individual talents and efforts, are properly taken into account in deciding how to reward people.