The main thing that's missing in energy is an incentive to create things that are zero-CO2-emitting and that have the right scale and reliability characteristics.

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

You always overestimate what you can get done in a year and underestimate what you can get done in 10 years.

I think given all the different imperatives - getting energy to Africa, security of energy, climate change, that we should be spending half as much as we spend on health, which will get you all the way up to $15 billion - the health people don't like it when things get compared to their number.

Africa is on the rise.

I think when smallpox was eliminated, the whole world got pretty excited about that because it’s just such a dramatic success.

Digital reading will completely take over. It's lightweight and it's fantastic for sharing. Over time it will take over.