I don't understand the notion that modern farming is anything do to with nature. It's a pretty gross interference with nature.

I believe that in this new world that we live in, we often have a responsibility, you know, to actually go beyond the thou shalt nots - that is, the not harming others - and say we can help others and we should be helping others.

Of those who die from avoidable, poverty-related causes, nearly 10 million, according to UNICEF, are children under five. They die from diseases such as measles, diarrhoea, and malaria that are easy and inexpensive to treat or prevent.

If you earn a lot of money, you can give away a lot of money.

In a situation where many national leaders do the same thing and look out for national interests, and with an issue like global warming, you're likely to get no solution, so I think you have to have some kind of ethical trump on some of those issues.

The traditional view of the sanctity of human life will collapse under pressure from scientific, technological and demographic developments.

Surely there will be some nonhuman animals whose lives, by any standards, are more valuable than the lives of some humans.