The very fact that we don’t know what debt is, the very flexibility of the concept, is the basis of its power. If history shows anything, it is that there’s no better way to justify relations founded on violence, to make such relations seem moral, than by reframing them in the language of debt–above all, because it immediately makes it seem that it’s the victim who’s doing something wrong. Mafiosi understand this. So do the commanders of conquering armies. For thousands of years, violent men have been able to tell their victims that those victims owe them something. If nothing else, they “owe them their lives” (a telling phrase) because they haven’t been killed.

–David Graeber, Debt: The First 5,000 Years