Good politics starts with empathy, proceeds to analysis, then sets out values and establishes the vision, before getting to the nitty-gritty of policy solutions.

What's now urgently needed [to stop environmental disaster] is the international political commitment to take action to avoid dangerous climate change.

Turning every business into an environmental industry will involve applying new principles...first, we need to make more with less...second, we need to design out waste...third, we must begin to decarbonise our energy supply

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

You know, you only get to live life once, so there are two things that that yields. One is that there's no point in crying over spilt milk, but secondly you hate wasting time, energy, and whatever talent you've got...

If you decide to run for the leadership, you have to go through it with the people you love. But you also have to protect them and I am determined to protect my mum.

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