「己所不欲，勿施于人」
“What you do not want done to yourself, do not do to others”
—— 论语己所不欲，勿施于人——儒家之心路径第四步，接在仁、礼、中庸之后。行动前互换角色：不是相对主义，而是尊重的底线，由近及远。下一步「有教无类」：伦理必须包含谁能学习。今日：伤害陌生人的政策与玩笑，先过不了这一句。
What you do not wish for yourself, do not do to others—a portable test after Ren, Li, and Zhong Yong on EastSage’s Confucian Heart path. Before you act on someone, reverse the roles. It is not soft relativism; it sets a floor of respect that scales from family outward. Pair with “education without classes” next: ethics must include who gets to learn. Today: policies and jokes that harm strangers fail this line first.