VASUBANDHU

Vasubandhu was born around 350 CE (scholarly estimates vary widely) in Purushapura, the capital of Gandhara in northwestern India. His father was a Brahmin; three sons became Buddhist monks. The eldest, Asanga, became a great Mahayana master. Vasubandhu initially followed a different path.

He trained in Sarvastivada Buddhism, the dominant Abhidharma school of northwestern India. Abhidharma is Buddhist scholasticism: exhaustive analysis of mind and reality into fundamental categories (dharmas). Vasubandhu mastered it completely, writing the Abhidharmakosa (Treasury of Abhidharma), which remains the definitive systematic treatment. Even traditions that disagreed with his conclusions used his text.

But he was troubled. Sarvastivada held that dharmas — the basic elements of reality — have real existence (svabhava) in all three times: past, present, and future. Vasubandhu found this philosophically problematic. He wrote an auto-commentary on the Kosa subtly criticizing his own school, favoring the Sautrantika view that only present dharmas exist. This was already a move toward idealism: if dharmas exist only when cognized, perhaps existence and cognition are not so separate.

Then came conversion. His half-brother Asanga was a Mahayana master who had (tradition says) received teachings from the future Buddha Maitreya in the Tushita heaven. Asanga saw Vasubandhu’s brilliance and wanted him for Mahayana. According to legend, he feigned illness; when Vasubandhu visited, Asanga had sutras read aloud. Vasubandhu listened, understood, and converted.

His shame was intense. He had written against Mahayana; now he saw its truth. He wanted to cut out his offending tongue. Asanga redirected his energy: use that tongue to explain Mahayana. Vasubandhu complied spectacularly. He wrote treatises establishing Yogacara philosophy: consciousness-only, the three natures, the transformation of the basis. He commentated on major sutras. He systematized what Asanga had taught.

Yogacara (also called Vijnanavada or Cittamatra) holds that what appears as external world is actually the transformations of consciousness. There is no matter “out there” being perceived; there is only consciousness projecting appearances. This is not solipsism — all sentient beings have consciousness, and their karmic seeds interact — but it denies matter as a separate category. Liberation comes from realizing this, transforming consciousness at its root.

Vasubandhu spent his later years teaching, probably in Ayodhya. He died around 430 CE (estimates vary by decades), having produced a body of work that shaped East Asian and Tibetan Buddhism for centuries.

Vasubandhu’s thought develops across two phases. His early Abhidharmakosa analyzes reality into dharmas — the basic categories of Buddhist metaphysics: form, sensation, perception, mental formations, consciousness, and their subdivisions. This is painstaking work, mapping every mental state and physical element. But even here, Vasubandhu’s commentary shows dissatisfaction with his school’s realism.

His Yogacara works make the radical move: there are no external objects. What appears as “the world out there” is the transformation of consciousness itself. This isn’t saying the world doesn’t exist; it’s saying the world doesn’t exist as we naively think — as mind-independent matter causing our perceptions. The dualism of subject and object, perceiver and perceived, is a construction of consciousness, not a discovery about reality.

The argument proceeds through counterexamples. Dreams seem external but aren’t. Hungry ghosts, animals, and humans see the same river differently (pus, habitat, water) — if the river were objectively one thing, perception would agree. People with cataracts see non-existent hairs. If consciousness can produce objects in these cases, why not always?

Yogacara psychology posits eight consciousnesses. The usual six are the five senses plus mental consciousness. But beneath these lies manas — the “thinking” consciousness that grasps experience as “mine” and creates the sense of self. Deepest is alaya-vijnana — the “store consciousness” containing the karmic seeds that mature into experience. The store consciousness is neither individual nor universal; it’s the impersonal repository where karma unfolds.

The three natures (trisvabhava) structure reality: the imagined nature (parikalpita) is the false subject-object duality we project; the dependent nature (paratantra) is the flow of consciousness itself, dependently arising; the perfected nature (parinispanna) is the dependent nature seen without the imagined overlay — reality as it is.

Liberation is “transformation of the basis” (asraya-paravrtti). The store consciousness, purified of karmic seeds and false duality, becomes “mirror wisdom” — pure awareness without subject-object split. This is not destroying consciousness but removing what distorts it. When the cataract is removed, you don’t lose your eyes; you see clearly.