You wish that you could move more rapidly and you have setbacks. You know, the AIDS epidemic was a huge setback for Africa, and it's only through generosity that we've avoided that just completely crippling an entire generation there.

People are going to buy cheap fertilizer so they can grow enough crops to feed themselves, which will be increasingly difficult with climate change.

...one of the most inventive forms of creative capitalism involves someone we all know very well. A few years ago, I was sitting in a bar here in Davos with Bono. Late at night, after a few drinks, he was on fire, talking about how we could get a percentage of each purchase from civic-minded companies to help change the world. He kept calling people, waking them up, and handing me the phone to show me the interest.

Stolen's a strong word. It's copyrighted content that the owner wasn't paid for.

I've always been interested in science - one of my favourite books is James Watson's 'Molecular Biology of the Gene.'

When you say that after World War I there was a pandemic that killed more people than the war itself, most will say: "Wait, are you kidding? I know World War I, but there was no World War 1.5, was there?" But people were traveling around after the war, and that meant the force of infection was much higher. And the problem is that the rate of travel back then was dramatically less than what we have nowadays.

Investing in innovation, which was my broad theme talking to [Warren Buffett ], that included health vaccines, it included energy and education.