Dualities in ancient stories, such as good versus evil or chaos versus order, shape narratives by creating conflict and tension. These opposing forces drive plots, establishing character motivations and ethical dilemmas. For example, in many creation myths, the struggle between light and darkness represents the balance necessary for existence. Such dualities not only highlight the complexities of human nature but also allow for contemplations on morality, choice, and the interplay between contrasting ideals within diverse cultures.