Nachiketa is a character from ancient Indian texts, particularly the Katha Upanishad. He is a young boy who seeks knowledge about life and death after being sent to the realm of the dead by his father. His quest leads him to meet Yama, the god of death, who teaches him profound truths about the nature of existence. The story of Nachiketa emphasizes the importance of self-inquiry and the pursuit of wisdom. Through his dialogue with Yama, he learns about the eternal soul and the distinction between the temporary pleasures of the world and the lasting fulfillment found in spiritual knowledge.