[Describes visiting a factory farm shed where she saw a large male boar,] his huge head hanging low towards the barren floor. As I came level with him he raised his head and dragged himself slowly towards me on lame legs. With deliberation he looked straight at me, staring directly into my eyes. It seemed to me that I saw in those sad, intelligent, penetrating eyes a plea, a question to which I had no answer: "Why are you doing this to me?"
The Silent Ark, cited in Jeffrey Moussaieff Masson, The Pig Who Sang to the Moon: The Emotional World of Farm Animals (New York: Ballantine Books, 2004), ch. 1, p. 23.