"The future of the planet is in our hands."

"I'm often asked if I get lonely out in the field. And the answer is no, because I'm surrounded by life."

"We are at a critical point in time. We need to act now to save the planet."

"I'm often asked if I'm an optimist or a pessimist. I say I'm a 'possibilist.'"

"I don't understand why we have to be so destructive. Why can't we learn to live in harmony with nature?"