“There are many examples of animals coming to surprising living arrangements...where an animal takes a human being or another animal to be one of it's kind.”

“The cost to reconnect animals to live in natural settings without human support is a debt that many animals in transition must honor with their lives.”

“And people who believe in God think God has put human beings on earth because they think human beings are the best animal, but human beings are just an animal and they will evolve into another animal, and that animal will be cleverer and it will put human beings into a zoo, like we put chimpanzees and gorillas into a zoo. Or human beings will all catch a disease and die out or they will make too much pollution and kill themselves, and then there will only be insects in the world and they will be the best animal.”

“The capacity of human beings to bore one another seems to be vastly greater than that of any other animal.”

“One simple test of the claim that the pleasure in the world outweighs the pain…is to compare the feelings of an animal that is devouring another with those of the animal being devoured.”

“Let animals live like animals; let humans live like humans. That's my whole philosophy in a sentence.”