I've got personal views on the '60s. You can't have freedom without paying the price for it.

Humans on the Earth behave in some ways like a pathogenic micro-organism, or like the cells of a tumor.

The problem is we don't know what the climate is doing. We thought we knew 20 years ago. That led to some alarmist books - mine included - because it looked clear-cut, but it hasn't happened.

China will soon emit more greenhouse gases than America, but its regime knows if it caps aspirations there will be a revolution.

Humans are too stupid to prevent climate change from radically impacting on our lives over the coming decades.

We live at a time when emotions and feelings count more than truth, and there is a vast ignorance of science

There is no clear distinction anywhere on the Earth's surface between living and nonliving matter. There is merely a hierarchy of intensity going from the 'material' environment of the rocks and the atmosphere to the living cells.