The third virtue, temperance (discipline) is a bit more difficult of analysis because it seems to permeate the other virtues. Temperance is found in the ordering or controlling (tempering) of certain pleasures or desires in the individual; the temperate man is said to be master of himself. If we extend this to the state, in order for it to regulate itself, we see that the state has to run harmoniously. Every class in the state has to cooperate with the other classes; the classes agree with and actively endorse the functions of all classes in the state. Thus the state may be said to be master of itself, in that the three classes will function smoothly as a whole (the state) because of concord and harmony among the classes. The class of rulers, wherein the virtue of wisdom in counsel is to be found, agrees to rule in the service of the other classes and of itself; the ruled classes agree to serve and to be ruled wisely. Thus the virtue of temperance in the state is attained.
Having determined three of the four virtues, only the fourth virtue, justice, remains. We recall that the responsibility of each member of each class is that he attend strictly to the business of that class, that each member fulfill the job assigned him. Since we have determined that each citizen is rewarded within the confines of his class by the very virtue of his patriotically performing his class duty, it follows that no other citizen may by force deprive him of the rewards guaranteed him by his class. When we protect a member of a given class by upholding his "rights" as a matter of course, or we protect him by securing his "rights" in the event that someone attempts, by whatever means, to deprive him of his "rights," then we have effected justice and may recognize it as justice in the state.
