In the future, every industry should be an environmental industry. In a world where energy and carbon emissions are constrained, every business must take resource productivity seriously

The window of opportunity to avoid dangerous climate change is closing more quickly than previously thought.

In the end, human history is made up of all our decisions.

We know from history that the way wars are concluded is absolutely the key to whether or not there is any peace to be kept.

I don't think I've ever been accused of being faddish. I'm more Marks & Spencer than Ted Baker.

First, climate change is the greatest long-term threat faced by humanity. It could cause more human and financial suffering than the two world wars and the great depression put together. All countries will be affected, but the poorest countries will be hit hardest. Secondly, the costs of inaction far outweigh the costs of action.

My advice is very simple: if you can win a small battle, it gives you confidence in the political process to take on bigger battles, and so it is very much a bottom-up grass-roots way of doing politics.