" As I discuss in Introduction to Animal Rights: Your Child or the Dog?, we may, in the lifeboat or burning-house situation, decide to favor the human over the nonhuman not because death is a lesser harm to the nonhuman, but because we do not know what death means to the nonhuman and we have a better idea what it means to the human. We might, therefore, rely on this—a matter of epistemological limitation on our part and not any empirical claim that death is a lesser harm to humans—as the tie-breaker. We might also flip a coin. We might also decide to choose the nonhuman for some other reason, such as that the human in question is very old and the nonhuman in question is very young. In no case, however, would I think it appropriate to invoke any notion that humans are “higher” animals. "

― Gary L. Francione , Animals as Persons: Essays on the Abolition of Animal Exploitation