The concept of duality appears prominently in Sumerian mythology, exemplified by the tension between chaos and order, life and death. Deities such as Enki and Enlil embody these opposing forces, representing creative and destructive aspects of existence. Myths reflect the dual nature of humanity and nature, highlighting the balance needed for harmony. This duality underscores the complexities of life, emphasizing the necessity of both creation and destruction in the cosmic cycle and echoing through various Sumerian narratives.