"At the beginning and end of the discourse, the Buddha exhorts his monks to 'keep to their own preserves' by the practice of mindfulness. Then he tells of a 'wheel-turning monarch' (a righteous ruler) who had the sacred Wheel Treasure, which had to be carefully guarded. He was followed by a line of righteous kings, but eventually they degenerated, and society went from bad to worse, while the human life-span sank to ten years and all sense of morality was lost. After a brief but dreadful 'sword-interval' things improved, and finally another Buddha, Metteyya (Sanskrit: Maitreya) will appear. (26)"