Put yourself in his shoes and you'll understand his difficulty.
Tips
history
Zhu Xi's gloss on 《论语·卫灵公》: 己所不欲，勿施于人 ('do not do to others what you would not want done to yourself'). The Confucian ethic of empathy — reasoning from your own heart to another's.
culture
Functions as the Confucian equivalent of the Golden Rule. Central to traditional Chinese ethics and still widely invoked in moral education.
