When you're a catalyst for change, you make enemies - and I'm proud of the ones I've got.

[Falling pound] makes us more competitive.

We need to push ourselves to make as many reductions as possible in our own energy use first - and that takes time. But we must do this quickly - the climate will not wait for us.

Imagine if we succeed in inspiring our audiences to reduce their own impacts on climate change by just 1 percent. That would be like turning the state of California off for almost two months.

I'm a catalyst for change. You can't be an outsider and be successful over 30 years without leaving a certain amount of scar tissue around the place.

I'm not ashamed of any of my papers at all and I'm rather sick of snobs that tell us that they're bad papers, snobs who only read papers that no one else wants. I doubt if they read many papers at all.

We could make a difference just by holding our emissions steady as our businesses continue to grow. But that doesn't seem to be enough: we want to go all the way to zero... Today, I am announcing our intention to be carbon neutral, across all our businesses, by 2010.