Jin Xin II · Passage 08 / 38 · 孟子 7B.8
Mencius 7B.8: frontier gates used to commit violence
In one sharp line Mencius names institutional inversion: a gate once built to restrain violence can become a machine for violence when its practical function.
孟子曰：「古之為關也，將以御暴；今之為關也，將以為暴。」
Mencius said, 'Anciently, the establishment of the frontier-gates was to guard against violence. Nowadays, it is to exercise violence.'
Priority note
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Central question
Why does Mencius say that frontier gates once restrained violence but now commit it?
Direct answer
Because institutions may keep the same outer form while their actual function reverses. Once an apparatus named security begins harming the people in the name of protection, it has moved from guarding against violence to exercising it.
First principle
To judge an institution, ask not what it is called, but what it now does.
Why it matters
This passage serves searches around state violence, institutional inversion, and security becoming coercion. It is one of Mencius's sharpest judgments on political function.
Further reading
What this passage is doing
This is passage 8 of 38 in Jin Xin II. The cleanest entry point is "Anciently, the establishment of the frontier-gates was to…". In context, it works as part of Mencius's argument about knowing words, knowing destiny, and the completion of cultivation and can be read alongside Flood-like qi, Human nature.
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Related principles
Citation note
Do not read it as mere nostalgia. The point is not ancient sentiment but functional reversal: an institution named protection can become violence itself.