There are innumerable instances of things which attach themselves to something else, then waste and destroy it. The body has lice; a house has mice; a country has robbers; inferior men have riches; superior men have benevolence and righteousness; priests have the Buddhist law.

What is the purpose of houses? It is to protect us from the wind and cold of winter, the heat and rain of summer, and to keep out robbers and thieves. Once these ends have been secured, that is all. Whatever does not contribute to these ends should be eliminated.[6]