Yīchéng yì sījì 一乘義私記
Private Notes on the One-Vehicle Doctrine by 珍海 (Chinkai, 撰)
About the work
A single-fascicle Japanese Sanron 三論 doctrinal monograph on the One-Vehicle (一乘 yīchéng) doctrine, by the late-Insei-period Tōdaiji 東大寺 Sanron master Chinkai 珍海 (1091/1092–1152). The work belongs to Chinkai’s mature Sanron-doctrinal project alongside KR6m0027 Sānlùn xuánshū wényì yào and KR6m0032 Dàshèng xuán wèndá, and is best read as a thematic close-reading of the yīchéng chapter of 吉藏 Jízàng’s Dàchéng xuánlùn 大乘玄論 (T45n1853 = KR6m0031). The title’s sījì 私記 (“private notes”) denotes a personal-study notebook rather than a public lecture-text — a zibun-shū 自文集 in modern parlance.
Structural Division
CANWWW lists this text without an internal sub-toc block. Related texts per CANWWW: KR6m0031 Dàchéng xuánlùn 大乘玄論 (T45n1853); KR6m0032 Dàchéng xuán wèndá 大乘玄問答 (T70n2303).
Abstract
Chinkai 珍海 (1092–1152, DILA A000858) signed himself as “Chánnàyuàn Yuèqián yǐjiǎng 禪那院越前已講 珍海” in his other Sanron compositions; the same authorial profile is presumed for T2304. See 珍海 for biographical detail.
The work opens with the celebrated Yīchéng yì 一乘義 question of how to reconcile the Lotus Sūtra’s “one vehicle alone” (wéi yī fóshèng 唯一佛乘) doctrine with the Sanron-school treatment of expedient (provisional) and ultimate (true) vehicles. Chinkai proceeds by the bāshí mén 八十門 (eighty-gates) format characteristic of late-Heian Sanron systematics:
- yùn chū 運出 (vehicle as movement out [of saṃsāra])
- zhì nièpán 趣涅槃 (heading toward nirvāṇa)
- zòngrèn zìzài 縱任自在 (free-and-spontaneous) — distinguished from “movement-out” as the post-Buddhahood employment-mode of the One-Vehicle (per Chinkai’s reading of Jízàng’s Fǎhuá xuán 法華玄 fasc. 4)
- sānyī kāihuì 三一開會 (the opening-and-converging of the three [vehicles] into the one) — analysed under ten further sub-rubrics, including kāisān xiǎnyī 開三顯一 (opening the three to reveal the one), huìsān guīyī 會三歸一 (converging the three back into the one), běnlái wúbié 本來無別 (no original distinction), jísān jíshìyī 即三即是一 (three immediately are the one), fùsān míngyī 覆三明一 (covering the three to disclose the one), and fēisān fēiyī 非三非一 (neither three nor one).
A central polemical engagement is with the Fǎhuá lùn 法華論 of Vasubandhu (T26n1519, attributed) on whether “rǔ děng suǒ xíng shì púsà dào 汝等所行是菩薩道” — “what you are doing is the bodhisattva path” — refers (a) to the fruit of the śrāvaka-path itself being a bodhisattva path or (b) only to the bodhicitta seed-cause within the śrāvaka’s past. Chinkai surveys the major Sanron readings (including the Fǎhuá xuán and Yìshū readings) and adjudicates that the “púsà dào” reference is principally to the bodhicitta-seed, with the śrāvaka-fruit functioning only as remote condition (yuǎnyuán 遠縁) — a sophisticated Sanron compromise between the Fǎhuá lùn and the literal Chinese sūtra reading.
The work cites Bǎokū 寶窟 (Jízàng’s Wúliàngshòu jīng yìshū commentary), the Yìzhāng 義章 of Jìngyǐng Huìyuǎn 淨影慧遠 (a Sanron-Tiāntái competitor), and the Fǎhuá yóuyì 法華遊意 of Jízàng — confirming that Chinkai’s working library at Zen’na-in included the full Sanron exegetical apparatus.
The composition date is not internally specified; conventionally placed within Chinkai’s mature scholarly phase, c. 1110–1152.
Translations and research
- Hirai Shun’ei 平井俊榮. Sanron-kyōgaku no kenkyū 三論教學の研究. Tōkyō: Shunjūsha, 1990. (Principal modern survey including Chinkai’s yī-chéng doctrine.)
- Itō Takatoshi 伊藤隆寿. Kichizō no kenkyū 吉藏の研究. Tōkyō: Shunjūsha, 1985.
- Itō Kōan 伊藤宏顯. “Chinkai no Sanron-gaku” 珍海の三論學. Indogaku Bukkyōgaku kenkyū.
- Kanno Hiroshi 菅野博史. Chūgoku Hokke shisōshi kenkyū 中国法華思想史研究. Tōkyō: Shunjūsha, 1994. (Discusses East-Asian readings of the Fǎ-huá lùn “菩薩道” verse including the Sanron tradition.)
Other points of interest
T2304 is among the shortest of Chinkai’s Sanron works but the most technically focused: it is effectively a monograph on one of the most contested doctrinal cruxes of medieval East Asian Buddhism, the relation of the One Vehicle to the Three Vehicles. The work is also a notable witness to the close interaction between Sanron and Tendai 天台 doctrinal vocabularies in the Insei period; despite the strong sectarian differentiation between the two schools, Chinkai’s yīchéng analysis presupposes a Sanron response to and negotiation with Tendai’s One-Vehicle systematics, rather than an isolated school position.