"I would say there are people in this world who like hierarchies, they like to keep people in their place, they like law enforcement, and they probably have a lot in common, let's say, with the chimpanzee. And then you have other people in this world who root for the underdog, they give to the poor, they feel the need to be good, and they maybe have more of this kinder bonobo side to them. Our societies are constructed around the interface between those two, so we need both actually."