What is Asaṅga?
Asaṅga (fl. 4th century CE) was an Indian Buddhist philosopher who co-founded the Yogācāra school of Mahāyāna Buddhism. Born in Puruṣapura (modern Peshawar, Pakistan), he produced a body of work — including the Yogācārabhūmi-śāstra and the Mahāyāna-saṃgraha — that established the school's philosophy of mind. Its central doctrine is the ālayavijñāna (storehouse consciousness), the deepest layer of mind in which the seeds of experience are stored and from which they arise. His work shaped Tibetan, East Asian, and later Mahāyāna Buddhist thought for over fifteen centuries.
The Maitreya transmission
Asaṅga was born into a Brahmin family in Puruṣapura (modern Peshawar, Pakistan) in the early fourth century CE. The main account of his life comes from Paramārtha's sixth-century Chinese Life of Vasubandhu, carried forward by Tibetan historians Bu-ston and Tāranātha. After ordination in a Sarvāstivāda school in north-western India, he undertook a long retreat at Kukkuṭapāda (Cock's Foot Mountain), seeking direct contact with the future Buddha Maitreya, said to reside in the Tuṣita heaven. Tradition holds that after twelve years the encounter took place. Maitreya, the texts say, transmitted five foundational treatises to him: the Mahāyāna-sūtrālaṃkāra, the Madhyānta-vibhāga, the Dharma-dharmatā-vibhāga, the Abhisamayālaṃkāra, and the Ratnagotra-vibhāga (Uttara-tantra). Modern scholarship debates whether this Maitreya was a historical teacher named Maitreyanātha, the bodhisattva, or a literary framing of the school's origins. The tradition treats the question as undecidable and the corpus as authoritative regardless.
The encyclopaedic corpus
Asaṅga's own output built the working architecture of Yogācāra as a complete philosophical and contemplative system. The Yogācārabhūmi-śāstra (Treatise on the Stages of the Practice of Yoga) is the most extensive: a hundred-fascicle survey mapping the path through seventeen progressive stages, from the foundations of meditative attention through the bodhisattva levels to the awakened knowing of a Buddha. The Mahāyāna-saṃgraha (Compendium of the Great Vehicle) is more compressed, organising the Yogācāra teaching under ten topics centred on the ālayavijñāna, the three natures (svabhāva), and the six perfections. The Abhidharma-samuccaya (Compendium of Higher Doctrine) reorganised the older Sarvāstivāda Abhidharma analysis using Yogācāra categories, and remained a standard Abhidharma textbook in the Tibetan monastic curriculum alongside Vasubandhu's Abhidharmakośa. Scholars often characterise the two brothers this way: Asaṅga is the synthesist who drew up the school's architectural plan; Vasubandhu later produced its portable summaries.
The conversion of Vasubandhu
The episode the tradition returns to most often is Asaṅga's conversion of his younger half-brother. Preserved in Paramārtha's Life, the story finds Vasubandhu at the height of his reputation as the foremost analyst of the Sarvāstivāda Abhidharma and openly hostile to the Mahāyāna treatises, which he regarded as later compositions of doubtful canonical standing. Asaṅga, near the end of his life, arranged for two monks to recite the Daśabhūmika Sūtra and the Akṣayamati-nirdeśa within earshot of his brother. The encounter, the tradition holds, dissolved Vasubandhu's resistance and prompted his philosophical conversion. He then produced the Triṃśikā, the Viṃśatikā, and the Trisvabhāva-nirdeśa, which became the school's most-read portable summaries. Whatever the literal accuracy of the story, the structural relationship it preserves is real: Asaṅga drew the plan; Vasubandhu executed it in compressed prose.
The downstream
Asaṅga's three central contributions each found homes outside his own school. The ālayavijñāna entered East Asian Mahāyāna as the philosophical engine of Chinese Fǎxiàng and Korean Sŏn lineages. Through the Awakening of Faith in the Mahāyāna, the doctrine reached Bodhidharma and the Zen inheritance. The tathāgatagarbha (Buddha-nature) doctrine became central to the Tibetan Vajrayāna reception of Mahāyāna and the philosophical ground of the Mahāmudrā and Dzogchen curricula. The three-natures (trisvabhāva) analysis became the doctrinal anchor of Śāntarakṣita's eighth-century synthesis, which read Asaṅga's framework and Nāgārjuna's Madhyamaka as complementary levels rather than rival schools.
Asaṅga and adjacent figures
Asaṅga is often paired with Nāgārjuna, the second-century founder of Madhyamaka. Both are founding figures of Mahāyāna philosophy, but they work differently. Nāgārjuna's project is critical: he uses logical analysis to show that all things lack inherent existence (svabhāva), dissolving any fixed view. Asaṅga's project is constructive: he describes how the mind builds the appearance of an independent world, and maps the contemplative path that undoes that construction step by step. The Tibetan tradition typically reads them together as complementary levels of analysis rather than as rivals. Asaṅga is also regularly paired with his half-brother Vasubandhu. The difference is one of scope: Asaṅga is the encyclopaedic synthesist, producing the school's comprehensive textbooks; Vasubandhu's later Mahāyāna works are tighter dialectical treatises that make the same positions portable and arguable.
Where the lineage shows in the index
Asaṅga's own treatises are not in this index. What the index carries is his work's downstream weight in three registers. *The Awakening of Faith in the Mahāyāna* is the single text most responsible for transmitting the ālayavijñāna doctrine and the tathāgatagarbha reading into the East Asian schools. Junjirō Takakusu's *The Essentials of Buddhist Philosophy* devotes its longest chapter to the Yogācāra inheritance under its Japanese name Hossō. The same ālayavijñāna analysis runs through Thich Nhat Hanh on emptiness, signlessness and aimlessness and his teaching on direct access to ultimate truth: the seeds in the store consciousness image he uses is Asaṅga's bīja doctrine in plain English. The Yogācāra-derived Buddha-nature reading runs through Pema Chödrön's *When Things Fall Apart* and her course on awakening compassion, under the Karma Kagyu view that ordinary mind and awakened mind are not different substances.
Why he is in the lexicon
No item in the index sits under Asaṅga's name directly. He appears in the lexicon on the same logic that placed Ādi Śaṅkara, Papaji, and Śāriputra here without items: he is the structural upstream of more than one strand the index carries. Asaṅga is the figure through whom Nāgārjuna's emptiness analysis was paired with a positive psychology of mind. The school's Cittamātra claim is that the apparent independence of objects from the mind that knows them is a constructive feature of how mind works, not a given the path must accommodate. The pairing of Madhyamaka emptiness with Yogācāra psychology is the philosophical engine of nearly every later Mahāyāna lineage. The entry is here to make that architecture legible inside the index that carries its downstream literature.
