Cái thứ người.

"I have always felt we speak too much about human beings. This world is crowded with humans, but also with animals, birds, fish, and insects. They were here before we were and they will still be here should the day come when there are no more human beings. There is one difference between us: in our museums we have the bones of the dinosaurs, enormous animals that lived for many millions of years. And when they died, they died in a very clean way. No poison at all. Their bones are very clean. We can see them. This will not happen with human beings. When we die there will be a terrible breath of poison. We must learn that we are not alone on the earth"