`But I don't want to go among mad people,' Alice remarked. `Oh, you can't help that,' said the Cat: `we're all mad here. I'm mad. You're mad.' `How do you know I'm mad?' said Alice. `You must be,' said the Cat, `or you wouldn't have come here.'
“To give preference to the life of a being simply because that being is a member of our species would put us in the same position as racists who give preference to those who are members of their own race.” Peter Singer