Throughout the four texts, the theme of power evolves as society becomes more complex. Power changes in different contexts. In the beginning, the well known concept that knowledge is power is introduced; that power can both be given and be gained, and moving through the texts one sees how true that concept remains through history and present day. We have seen opposing interpretations of power with Rousseau in the context of Hobbes and Locke. In this case, power is linked with inequality and readers can clearly see that sources of power shift over time. From this point, we jump ahead to Marx, who believes these shifts in power are cyclical and inevitably power will be distributed evenly after revolution.