I couldn't live with myself if I thought that these big strategic choices for my generation were there, and I wasn't even making them - or I was making them according to what was expedient rather than what I actually thought was right.

Personally, I have already turned down the Downing St thermostat by 1 degree

Climate change is the world's greatest environmental challenge. It is now plain that the emission of greenhouse gases, associated with industrialization and economic growth...is causing global warming at a rate that is unsustainable.

Now, again, what the center ground has got to do is to respond to people's genuine concerns and fears.

I think the people like myself who are in the center ground of politics and who think that center left and center right can cooperate and work together. Who don't like this sort of insurgent populism because we think it's not really going to deliver for the people, I think there's a big responsibility on us in the center to get our act together. And to work out radical but serious solutions to the problems people face.

Do I know I'm right? Judgements aren't the same as facts. Instinct is not science. I'm like any other human being as fallible and as capable of being wrong. I only know what I believe.

There's a huge wave of anti-establishment feeling. There's an enormous amount of anger. And it's collapsing governments and political movements across the world right now.