Think of US slavery in 1850, or the subjection of women. Both of these injustices could have been - and were! - defended by pointing out, quite correctly, that this situation of slaves and women had been improving throughout the preceding century. Slaves, in particular, were worked less hard, beaten and raped less frequently, better fed, and less often ripped apart from their families. So would a celebration of moral progress have been appropriate in 1850? Surely not. Slavery could have been and should have been abolished - then, if not before.

Some of the developing-country governments and populations are tired of having things rammed down their throats, but we're not yet at the stage we want to get to, namely where the developing countries join forces with one another on behalf of creative alternative ideas about how to take things forward.

The state should never have instituted and enforced legal property rights in persons, and should not have been in the business of returning runaway slaves to their "rightful owners." The whole institution of property in human beings was an unjust social institution and should not have been maintained in existence. It is this sort of thought that I'm appealing to at the supranational level.

Large multinational corporations, often acting through their industry lobbies, exert a powerful influence on the formulation of domestic rules and on their application - but their influence on supranational institutional design is even larger because it faces practically no opposition there.

To improve global health, it's not enough just to have a really good new product and to obtain marketing approval. You still need to market the product and bring it to patients, follow up, create the infrastructure, and so on - the whole pipeline, the network. That's something that companies are extremely good at: organizing a whole pipeline in a cost-effective way.

What we should do is require or at least permit innovators to license their green innovations free of charge in exchange for public payments based on the impact this innovation has on the environment - emissions averted or something of this sort.

We live in a world where economic positions - income and wealth - are very unevenly distributed, and this leads to the widespread persistence of poverty.