Earthworms are far more valuable than people.

We're just a conceited, naked ape. But in our minds we're some sort of "divine legend," and we see ourselves as some sort of god. That we can walk around the earth deciding who will live and who will die and what will be destroyed and what will be saved. But the fact is we're just a bunch of primates out of control.

If you don't know an answer, a fact, a statistic - make it up on the spot.

North American cats eat more fish than all the world's seals put together, yet we lay the blame on the seals for the declining fish stocks.

I've had a lot of disappointments. I think my biggest disappointment is the failure of elected officials to make good on their promises in regards to the environment or anything else, really. I have very little faith in politicians.

I can't think of a greater legacy than, "Because you lived, another species survived."

In other words, people should be placed in parks within ecosystems instead of parks placed in human communities. We need vast areas of the planet where humans do not live at all and where other species are free to evolve without human interference. We need to radically and intelligently reduce human populations to fewer than one billion.