Be gentle with the earth.

Share your knowledge. It's a way to achieve immortality.

Once a year, go someplace you've never been before.

In disagreements with loved ones, deal only with the current situation. Don't bring up the past.

We're terrible animals. I think that the Earth's immune system is trying to get rid of us, as well it should.

'For earth to heal, we must die. No one deserves it more.'

Think of the earth as a living organism that is being attacked by billions of bacteria whose numbers double every forty years. Either the host dies, or the vir…