Triṃśikā

Vasubandhu's 'Thirty Verses on Vijñaptimātra' — systematic Yogācāra exposition of the three-natures doctrine

Tradition: Yogācāra Buddhism / Mahāyāna philosophical idealism

Vasubandhu's 'Thirty Verses on Vijñaptimātra' — systematic Yogācāra exposition of consciousness, the three natures, and the eight consciousnesses

The companion to Viṃśatikā (Twenty Verses), Vasubandhu's 'Triṃśikā' (Thirty Verses on Vijñaptimātra) is the more positive-systematic exposition of Yogācāra mind-only doctrine. Composed c. 4th-5th century after Vasubandhu's conversion to Mahāyāna Yogācāra (under his elder brother Asaṅga's influence), the text consists of 30 verses (no auto-commentary by Vasubandhu survives; the major commentaries are by Sthiramati c. 6th century and by Dharmapāla, transmitted into the Chinese-Japanese Faxiang/Hossō tradition through Xuanzang's seventh-century translation). Across the thirty verses, Vasubandhu sets out the mature Yogācāra philosophical system. Major doctrinal contents: (1) The eight consciousnesses (aṣṭa-vijñāna): the alaya-vijñāna (store-consciousness, the substratum that carries the seeds of past actions across lives and serves as the substrate from which the other consciousnesses arise); the manas (ego-consciousness, the second-order awareness that mistakenly takes the alaya-vijñāna as a stable self); the six sense-consciousnesses (eye-consciousness, ear-, nose-, tongue-, body-, mind-consciousness). (2) The threefold-nature theory (tri-svabhāva): the imagined nature (parikalpita-svabhāva, the falsely-conceived self and external world), the dependent nature (paratantra-svabhāva, the genuine causal arising of phenomena from consciousness-seeds), and the perfected nature (pariniṣpanna-svabhāva, the realisation of consciousness-only and the absence of self-existent objects). (3) The doctrine of seeds (bīja) in the store-consciousness: every action plants a seed in the alaya-vijñāna; the seeds ripen into future experiences; spiritual practice involves the gradual transformation of the seeds in the substrate. (4) The path of transformation: how the threefold-nature realisation transforms the eight consciousnesses toward awakening. The text is the principal classical Yogācāra source and the subject of major Indian and East Asian commentarial traditions; through Xuanzang's translation it became foundational for the East Asian Faxiang/Hossō schools.