So, what I say to people is that politics has got to be about principle and values above all. Of course, there are times when you have to make accommodations.

Undoubtedly, at the moment, the major cause of CO2 emission is what happens in developed countries.

I think that what most surprises anybody who goes into politics from even a modestly cerebral background is the vulgarity of much of the cut and thrust of politics.

Green politics at its worst amounts to a sort of Zen fascism; less extreme, it denounces growth and seeks to stop the world so that we can all get off.

I don't think that capitalism should be unbridled, if by "unbridled" you mean unregulated.

It is almost always wrong that the time isn't ripe to decide something. That is always said of difficult problems.

You don't have to wait until people say they accept everything you say until you are actually prepared to sit down and discuss matters with them.