The Cardinal Virtues are four fundamental moral principles that guide ethical behavior. They are prudence, justice, fortitude, and temperance. These virtues are considered essential for living a good life and making sound decisions. Each virtue represents a key aspect of moral character and helps individuals navigate complex situations. Prudence involves wise decision-making, while justice focuses on fairness and giving each person their due. Fortitude is the courage to face challenges, and temperance promotes self-control and moderation. Together, these virtues form a framework for personal development and ethical conduct in society.