Treatise on the Twelve Gates
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Nāgārjuna's Treatise on the Twelve Gates, Dvādaśanikāyaśāstra
十二門論 (Chin Shih-erh-men-lun; Jpn Juni-mon-ron )
A work attributed to Nagarjuna (c. 150-250) and translated into Chinese in 409 by Kumarajiva.
Only the Chinese version is extant.
The Treatise on the Twelve Gates is one of the three treatises of the Three Treatises (Chin Sanlun; Jpn Sanron) school, the other two being The Treatise on the Middle Way and The One-Hundred-Verse Treatise, and was widely studied in China and Japan.
This work consists of twelve sections, each addressing a different subject.
It explains the Mahayana doctrine of nonsubstantiality, concluding that all phenomena are non-substantial in nature.