" Despite widespread attemps to equate human captives with domestic animals and even to market them and price them the same way <...> slaves were fortunately never held long enough in a distinctive group to undergo genetic neoteny <...>. Yet a kind of neoteny was clearly the goal of many slaveholders, even if they lacked a scientific understanding of how domestication changed the nature and behavior of animals. Aristotle's ideal of the "natural slave" was very close to what a human being would be like if subjected to a genetic change similar to that of domesticated plants and animals. "

― David Brion Davis , Inhuman Bondage: The Rise and Fall of Slavery in the New World