The physical appetites must be controlled by reason. Reason, therefore, is the source of virtue. Man uses his reason to judge between the extremes of any given act. The middle course constitutes virtue. The purpose of the state is to produce human good.
Man is social by nature.
He will naturally be political. The difficulty in political philosophy is to determine how man may act reasonably and virtuously to achieve the best political action. The ideal state must be reasoned as a mean between two governmental extremes. Constitutional Monarchy . The best form of government is a constitutional monarchy, which is the mean between the extremes of despotism and democracy.