 The "Asuras who become Devas" in contrast are driven by an inner voice, seek understanding and meaning, prefer moderation, principled behavior, morals, knowledge, and harmony.The hostility between the two is the source of extensive legends and tales in the Puranic and the Epic literature of Hinduism; however, many texts discuss their hostility in neutral terms and without explicit condemnation.Some of these tales are the basis for myths behind major Hindu festivals, such as the story of Asura Ravana and Deva Rama in the Ramayana and the legend of Asura Hiranyakashipu and Deva Vishnu as Narasimha, the latter celebrated with the Hindu spring festival of Holika and Holi.