Three things a person should guard against according to the "Analects of 孔子 kǒng​zǐ": lust in youth, quarrelsomeness in maturity, and greed in old age

A set of moral principles involving being cautious about one's actions, words, and worries

Title of a famous work by the Tang Dynasty writer 柳宗元 liǔ​zōng​yuán, consisting of three satirical fables