We need a lot of thinking and ideas. We need all the innovators, particularly with the new sustainable technologies - how do we get them to affordability so that people can generate clean energy?

We need a lot of thinking and ideas. We need all the innovators, particularly with the new sustainable technologies - how do we get them to affordability so that people can generate clean energy?

In terms of protecting ourselves, the main issues are around how do we protect our borders [from illegal migrants and livestock and plant diseases], how do we protect our fisheries?

Any serious shift towards more sustainable societies has to include gender equality.

We need innovation. We need great ideas that can be simply and effectively produced all over the place.

We just sent our condolences to the President of the United States and the American people on what is a terrible, terrible tragedy.

If you neglect those who are currently poor and stable, you may create more poor and unstable people. There has been a tremendous concentration of donor interest in countries that are seen as particularly fragile - but it becomes harder to mobilise money for sub-Saharan, plain poor countries.