There is no doubt that as an economy grows in a great way like India has, that you have to step back and change your tax systems, because you start to get more disparities of wealth.

The PC has improved the world in just about every area you can think of. Amazing developments in communications, collaboration and efficiencies. New kinds of entertainment and social media. Access to information and the ability to give a voice people who would never have been heard.

The Green Revolution focused on the big three - maize, rice and wheat - and the Green Revolution did not adapt the big three to African conditions, other than South Africa, as much as they should have.

Whenever you have war, you often have more deaths because the medical system and the food system breaks down, than you have directly through violence.

Often you have to rely on intuition.

The power of capitalism to mediate the gap between rich and poor is pretty incredible. Indeed, I think, year by year, the gap gets less.

I like to read general biology - things about the immune system and advances in that area - because it lays the foundation for my part of the dialogue at the foundation about what things we ought to pursue.