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

Climate change now represents so urgent a threat to mankind that the only way to deal with it is by suspending democracy.

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 would only have been too pleased if someone had asked me for my data. If you really believed in your data, you wouldn't mind someone looking at it. You should be able to respond that if you don't believe me go out and do the measurements yourself.

The inertia of humans is so huge that you can't really do anything meaningful.

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

Only rarely do we see beyond the needs of humanity, and he linked this blindness to our Christian and humanist infrastructure. It arose 2,000 years ago and was then benign, and we were no significant threat to Gaia. Now that we are over six billion hungry and greedy individuals, all aspiring to a first-world lifestyle, our urban way of life encroaches upon the domain of the living Earth.