"Looking back now on the whole sexual scene we can see that our species has remained much more loyal to its basic biological urges than we might at first imagine. Its primate sexual system with carnivore modifications has survived all the fantastic technological advances remarkably well."

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Are you a vegetarian?' I ask, based on the evidence in front of me. She nods. 'Why?' 'Because I have this theory that when we die, every animal that we've eaten has a chance at eating us back. So if you're a carnivore and you add up all the animals you've eaten--well, that's a long time in purgatory, being chewed.' 'Really?' She laughs. 'No. I'm just sick of the question. I mean, I'm a vegetarian because I think it's wrong to eat other sentient creatures. And it sucks for the environment.

— David Levithan