Aristotle

Let’s begin with some political theory. Aristotle, in his great treatise, the Politics, concluded that there are, basically, only two different kinds of governments in terms of the outcomes for a society — those that serve the common good, or the public interest, and those that have been co-opted to serve the self-interests of the people who hold political power. 

Aristotle, it seems, got it right.  Politics may have played a key role in human evolution as the classic primate pattern of male dominance hierarchies shifted to a pattern of consensual leadership for common goals and collective action.