Mencius — 仁者爱人

“Ren者爱人” — “The humane person loves others” — captures a foundational claim in the *Mencius*: that humaneness (*ren*) is not an abstract ideal but the very substance of the human heart. In the *Liang Hui Wang I* chapter, Mencius grounds this idea in observable moral intuition — our spontaneous distress at another’s suffering, our shame at wrongdoing, our joy when corrected. He insists that *ren* is innate: “Humaneness is the human heart.” To neglect it is to “lose one’s original heart,” a failure as grievous as letting a chicken or dog wander off while ignoring the far more vital loss of one’s moral orientation. The text compares this neglect to ignoring a bent finger while caring nothing for a disordered heart — “this is called not knowing kindred things.” Just as we nurture a sapling with care, so too must we tend the heart; and just as we judge a body by how fully we nourish every inch of it, so we assess moral cultivation by how thoroughly we attend to our inner nature. The *Mencius* thus presents humaneness not as duty imposed from outside, but as the heart’s own movement — recoverable, trainable, and inseparable from loving others.