There are four basic ways that you can hurt yourself in this world. The first is to break off the branch of your own tree when it is flowering and laden with fruit. The second is to act like a poisonous snake which bites itself. The third is to act like a dishonest official who harms his own country. The fourth is to not be a good person and thus be reborn in hell.
— Fo Shuo Pei Sutra, Being Good by Master Hsing Yun