" It is as simple as saying that nature has made birds to fly - therefore we should not raise them in cages for release at the pleasure of "gentleman hunters" positioned for the shot. Nature has made elephants and giraffe and rhinoceros to inhabit the plains - therefore we should not shoot them, stuff them, and stick them in our ballrooms for display. Nature has made whales and dolphins to swim the seas away from man - therefore we should not track them down by helicopters and attack or electrocute them from factory ships until they are almost gone from the waters. Nature has made pigs and cows and lambs and fowl to nurse from their mothers and walk and graze and mix with their kind - therefore we have no business confining and torturing and treating them like machines of our own inventions. "

― Matthew Scully , Dominion: The Power of Man, the Suffering of Animals, and the Call to Mercy