This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Xunzi's chapter titled Xing E, usually translated Human Nature Is Evil, reads at a distance like the flat opposite of Mencius, and Xunzi himself invites that reading by attacking Mencius by name for supposedly confusing what people are born with and what people achieve through effort. But the Stanford Encyclopedia's entry on Xunzi, revised as recently as 2025, argues that the disagreement is narrower and stranger than the two slogans suggest, and that a fair amount of it turns on how the word xing, nature, was being used rather than on any real dispute about human potential.
Xunzi defines xing as what a person is by birth alone, the raw faculties, capacities and desires present before any training, which if simply followed without correction produce contention, robbery and disorder. That is the sense in which nature is e, a word closer to detestable or unrefined than to the Christian sense of moral evil. The second half of Xunzi's formula, that what is good is wei, artifice or deliberate effort, is doing at least as much work as the first half, because it commits him to the same conclusion Mencius reaches by a different route, that people are not stuck with their raw material and can become good through sustained practice. The entry notes that recent scholarship, drawing on the Guodian bamboo manuscripts from around 300 BCE, suggests Mencius's expansive sense of nature, as including tendencies that only mature under the right conditions, may have been the unusual position among early Confucians, and that Xunzi's narrower, birth-only definition was closer to the era's default usage. If that is right, then Human Nature Is Evil is less a rebuttal of Mencius's ethics than a rebuttal of Mencius's vocabulary, a complaint that he stretched the word nature to cover something that should properly be called cultivation.
Where Xunzi genuinely parts from Mencius is on where moral resources come from. Mencius locates the four sprouts inside the person, waiting to be extended through reflection. Xunzi insists that self-cultivation has to look outward, to ritual, li, as it was codified by the ancient sages and transmitted through practice, particularly through things like the three year mourning period, which he describes as a form built to match the shape of grief rather than an arbitrary rule imposed on it. Where Mencius trusts an inner tendency that needs only tending to reach its natural end, Xunzi trusts nothing in raw human material to already point toward the result, which is why ritual, transmitted from outside the person rather than drawn out from within, has to do the whole of the shaping work.
The entry singles out a second and, in its own words, probably the greatest controversy in Xunzi studies today: whether the Way, dao, that ritual is meant to track is something built into the world for humans to discover, or something humans construct and then treat as authoritative. The line most often cited for the constructivist reading, that the Way is neither the Way of Heaven nor of Earth but simply what people take it to be, sits uneasily next to Xunzi's repeated insistence that there is only one Way in the world and that good governance means correctly reading patterns that hold constant across dynasties, which sounds much more like discovery than invention. The tension has not been resolved, and the entry treats it as genuinely open rather than a matter of one camp simply misreading the text. What is easier to settle is Xunzi's own long exile from the tradition he helped found: blamed for centuries as the source of his students Han Feizi and Li Si's authoritarian Legalism, he has only in the last generation been restored to serious standing as, in his own era's phrase, a most revered teacher.