Whatever we, as prospective participants unaware of our specific features, would desire society to be like is what, morally speaking, we ought to institute.

Though people could, in principle, cross national borders to reach places where their work is more highly rewarded, they are in fact prevented from doing so. As a result, huge differences also persist in the price of labor, as you can see when you get a haircut in rural India or hire a driver or babysitter in Bolivia. You can easily buy such services at one-fiftieth the price you would pay in London, Hamburg or Manhattan.

The fact that oppressive and corrupt regimes can borrow money in the name of the whole country means that the country's future generations will be weighed down by interest and repayment burdens, even if the money has been frittered away in some frivolous way, embezzled or used for weapons to suppress the country's population.

Dictatorial regimes often manage to keep themselves in power because they are recognized by foreigners as representing the state and its people, and therefore as entitled to sell the country's natural resources and to borrow money in its people's name. These privileges conferred by foreigners keep autocrats in power despite the fact that they were not elected and do not rule in the interest of the population.

What is really nice about the Health Impact Fund is that it is a win-win, something that without much cost to anyone makes a lot of people better off.

The domestic power structure - how power is exercised in the United States, for instance - greatly influences the structure of international institutions. So, for example, the Clinton administration was very influential in shaping the WTO treaty, and, because of the way the US domestic political system works, this meant that corporations could use the US government to wield a huge influence.

It is irrational to charge high prices for socially valuable innovations as this guarantees that they will be underutilized. It is much better to sell them at cost and then to reward the innovator in some other way. This is not always possible, because in some cases the value of an innovation is in the eye of the beholder; it's very difficult to value how much a new Madonna song is worth, for example. But in the case of medicines, green technologies and seeds in agriculture, such an alternative reward mechanism is fairly straightforward.