You're neither unnatural, nor abominable, nor mad; you're as much a part of what people call nature as anyone else; only you're unexplained as yet—you've not got your niche in creation.
Bio: David Rolfe Graeber was a London-based anthropologist and anarchist activist, perhaps best known for his 2011 volume Debt: The First 5000 Years. He was Professor of Anthropology at the London School of Economics.