Ethics is the part of the Stoics’ legacy that is most prominent and influential today. Their theory of the good life for human beings falls into the family of theories associated with Socrates and his followers. This tradition includes Plato and most Platonists, Xenophon, the Cynics, Aristotle, and later Aristotelians, all of whom share the view that virtue, the excellence of a human being, is the highest value and is its own reward. ‘Ethics’ discusses the Stoics’ views on human nature and rationality; the four basic virtues: justice, courage, wisdom, and moderation or self-control; and the doctrine that the fully rational and wise person will be free of passions.