Moral dualism is the belief that there are two opposing forces or principles that govern morality, often represented as good and evil. This concept suggests that human actions can be categorized into these two distinct moral realms, where good actions align with positive values and evil actions align with negative values. This idea is prevalent in various philosophical and religious traditions, such as Zoroastrianism, which depicts a cosmic struggle between the forces of light and darkness. Moral dualism can influence ethical decision-making by framing choices as battles between right and wrong, impacting how individuals perceive their responsibilities and consequences.