The Jain Scriptures are the source books of Jain ethics, yoga, religion, philosophy and mythology. The Tattvartha Sutra is a famous book which summarizes Jain teachings. The Acharanga Sutra deals chiefly with the ethical conduct and discipline of monks. The Kalpasutra describes in detail the life-story of Mahavira. A most remarkable description of hells is given in Sutrakritanga. The Sthananga discusses dogmatic topics, The Upasakadasha deals with pious men of the time of Mahavira. The contents of other book are mixed and varied. They deal with myths and legends, ethical and monastic discipline, hells and heavens, cosmology and astrology.