Virtue theory is a branch of ethical theory that emphasizes the importance of developing good character traits or virtues in order to lead a morally good life. It focuses on the idea that being a good person involves cultivating virtues such as honesty, courage, compassion, and wisdom, rather than simply following rules or maximizing outcomes. Proponents of virtue theory argue that by developing virtuous character traits, individuals will naturally make ethical decisions and act in ways that promote the well-being of themselves and others.