Philosophy › Socrates, Plato, Aristotle & the Axial Age › The Hundred Schools of Thought
Is human nature good or bad?
debated since c. 330 BC· Big question· Ethics & how to live
Mostly agreedGood evidence; some details uncertain.
Whether people are born inclined to goodness, to selfishness, or to neither, and so what society must do about it.
See it on the Philosophy map →The idea
In 4th- and 3rd-century BC China three answers emerged: Mencius said good, Xunzi said bad, and Gaozi said neither, like water that flows wherever it is channelled. The stakes are practical: if people are good, nurture them; if bad, restrain them with rules. In Europe Augustine stressed original sin, Hobbes feared a war of all against all, and Rousseau blamed society. Modern evidence is mixed: in a 2019 study across 40 countries, wallets containing money were returned more often than empty ones.
Why it matters
The answer shapes everything downstream: education, policing, prisons, management styles, and whether constitutions should trust leaders or check them.
Where it comes from
Recorded in the Mencius (Book 6A, the debate with Gaozi) and the Xunzi chapter 'Human Nature Is Bad'; modern evidence comes from developmental psychology and field experiments.
Still debated
Most researchers now think humans have both cooperative and aggressive tendencies; how much each depends on genes, upbringing or institutions is unresolved.
Connections (4)
▸Mencius (Mengzi): human nature is good answered "good" to Is human nature good or bad?Well documented
The connection
Mencius answered 'good', meaning people are born with the beginnings of virtue. Against Gaozi, who said nature is like water that flows east or west as channelled, he replied that water always flows downhill, as people naturally tend toward goodness. Evil comes from damage, like Ox Mountain, once wooded, stripped bare by axes and grazing.
When and how
The states of Qi and Teng, around 320 BC, in recorded debates with Gaozi and conversations with rulers.
How we know
Books 2A and 6A of the Mencius preserve the arguments, including the child at the well and Ox Mountain; Xunzi later attacks this view by name.
Debates and open questions
Whether Mencius claimed people are actually good or only have a tendency to be, and whether his water analogy proves anything.
▸Xunzi: human nature is bad answered "bad" to Is human nature good or bad?Well documented
The connection
Xunzi answered 'bad': left to itself, human nature craves gain and pleasure, which leads to strife. Goodness is wei (偽), deliberate effort, as a potter shapes clay into a pot. That is why people need teachers, ritual and law. Order comes from culture, not instinct.
When and how
In the chapter 'Human Nature Is Bad' (性惡), written in the 3rd century BC while he taught in Qi and served as a magistrate in Chu.
How we know
The chapter survives and argues directly against Mencius, quoting his position and rebutting it point by point.
Debates and open questions
Scholars debate how literally to take 'bad' (e 惡); some argue Xunzi and Mencius disagree less than their slogans suggest.
▸Is human nature good or bad? was answered pessimistically by Thomas Hobbes, LeviathanMostly agreed
The connection
Hobbes took the bleak side of the old debate: humans are driven by fear, competition and desire for glory. Without a common power to hold them in awe, these drives produce a 'war of every man against every man', which is why he concluded people need an absolute sovereign.
When and how
Leviathan, Chapter 13, written in Paris during the English Civil War and published in London in 1651.
How sure are we?
Hobbes states it directly in Leviathan, and points to everyday evidence: people lock their doors and chests even at home, among their own family.
Debates and open questions
Some scholars say Hobbes saw human nature as neutral rather than evil, since he says passions are not sins in themselves; the danger comes from the situation.
▸Is human nature good or bad? was answered optimistically by Jean-Jacques RousseauMostly agreed
The connection
Rousseau took the opposite side from Hobbes, closer to Mencius: humans are naturally good, moved by self-love and pity for others' suffering. Society, private property and constant comparison corrupted them. Hobbes, he said, had described civilized people and wrongly projected them back into the state of nature.
When and how
Discourse on the Origin of Inequality, written for a Dijon Academy essay prize and published in 1755; Émile (1762) opens 'Everything is good as it leaves the hands of the Author of things'.
How sure are we?
Rousseau criticizes Hobbes by name in the Discourse, and later called man's natural goodness the principle behind all his writing.
Debates and open questions
Scholars debate whether his state of nature was meant as history or as a thought experiment, and whether 'good' means virtuous or merely harmless.