“I'm a scientist, not a theologian. I don't know if there is a God or not. Religion requires certainty. Revere and respect Gaia. Have trust in Gaia. But not faith.”

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

“Sadly, it's much easier to create a desert than a forest.”

“Geological change usually takes thousands of years to happen but we are seeing the climate changing not just in our lifetimes but also year by year.”

“The oil companies regard nuclear power as their rival, who will reduce their profits, so they put out a lot of disinformation about nuclear power.”

“There is little evidence that our individual intelligence has improved through recorded history.”

“Fudging the data in any way whatsoever is quite literally a sin against the holy ghost of science. I'm not religious, but I put it that way because I feel so strongly. It's the one thing you do not ever do. You've got to have standards.”

“I'm a scientist, not a theologian. I don't know if there is a God or not. Religion requires certainty. Revere and respect Gaia. Have trust in Gaia. But not faith.”

“I always thought we had an environmental problem, but I hadn't realized how urgent it was. James Lovelock writes that by the end of this century there will be one billion people left.”