"The difference between a happy marriage and a miserable one... consists of about ten continued acts of stupidity or kindness, depending on the direction."
凡是言论好行动,有利于上天鬼神与百姓的就做,凡是言论好行动,有害于上天鬼神与百姓的就舍弃。 
To understand others, you must first understand yourself.