Plato's most influential work, The Republic, is also a part of his middle dialogues. It is a discussion of the virtues of justice, courage, wisdom, and moderation, of the individual and in society. It works with the central question of how to live a good life, asking what an ideal State would be like, and what defines a just individual. These lead to more questions regarding the education of citizens, how government should be formed, the nature of the soul, and the afterlife. The dialogue finishes by reviewing various forms of government and describing the ideal state, where only philosophers are fit to rule. The Republic covers almost every aspect of Plato's thought.