Machiavelli differed from true liberal thinking however, in that he still noted the benefits of princely governance. He states that republican leaders need to "act alone" if they want to reform a republic, and offers the example of Romulus, who killed his brother and co-ruler to found a great city. Republics need to refer to arbitrary and violent measures if it is necessary to maintain the structure of the government, as Machiavelli says that they have to ignore thoughts of justice and fairness.