Authority means the ability to affect others’ behavior without applying direct force. Its traces, noted among chimpanzees, develop among the “talking apes.” Human tribes may develop shamans even earlier than full-time chiefs. The advent of agriculture increased population density, enabling ambitious chiefs to have more sway over villagers than they could over sparse hunters: Land tillers are easy to locate and cannot abandon their fields even when hard pressed. A population density of five persons per square kilometer may be the threshold for state formation. Formation of the first states witnessed ferociousness rare in the present humans – or chimpanzees. Tool making shifted gatherers to hunting, and hunting skills may have selected for the most ferocious genes. Agriculture might have started an opposite process of self-taming that still continues, but meanwhile tribal freewheeling turned into utter regimentation, as if the state were the ruler’s household (oikos) and other people his slaves. This human self-domestication reached its fullest extent when the advent of money allowed humans to be sold and bought.