Vasubandhu · Theology
Two arguments from Vasubandhu’s <em>Vimsatika</em> (Twenty Verses): that partless atoms can never combine into extended objects, so the realist’s material world dissolves under analysis; and that the vividness, order, and force of experience - as the dream shows - cannot by themselves prove that external objects cause it.
The realist philosophers of Vasubandhu’s India - and many Buddhists too - explained the solid world the way we still instinctively do: extended objects are built up out of tiny indivisible particles, atoms (paramanu), too small to see but real, combining in vast numbers to form the tables, bodies, and mountains of experience. It is a natural, powerful idea: the smooth surface of a thing is a dense swarm of point-like particles. Vasubandhu, in his compact masterpiece the Vimsatika or ‘Twenty Verses,’ took this atomic theory and pressed on its central joint - the moment where atoms are supposed to combine. If the whole extended world rests on atoms joining together, then everything depends on their being able to join. And that, Vasubandhu argues, is exactly what a truly indivisible atom can never do. The building blocks, examined closely, cannot be stacked. The apparently solid material world turns out to rest on an operation - the aggregation of partless atoms - that cannot even be coherently described.
Vasubandhu tightens the vice by considering every way the realist might locate the reality of a material object. Is the real thing the whole - the single extended table, over and above its parts? Then, he argues (much as in the no-self case), there is no such extra thing: analyse the table and you find only parts arranged, never a further object, the whole, hovering above them. Is the real thing then the atoms, the ultimate parts? But we have just seen that partless atoms can neither be perceived (a single atom is invisible) nor combined into anything extended. So the reality cannot lie in the whole, and it cannot lie in the atoms. There is no third option: an extended material object is supposed to be either its parts or something over its parts, and neither survives analysis. Wherever you reach for the solid material thing - up at the whole or down at the atoms - your hand closes on nothing. The object of the realist’s confidence has quietly disappeared between the levels.
It is important to state Vasubandhu’s dream argument precisely, because it is easy to overstate. He is not claiming that waking life is literally a dream, or that he can prove there are no external objects. The dream is a counterexample to a specific inference - the inference from ‘my experience is vivid, ordered, effective, and shared’ to ‘therefore external objects must be causing it.’ The dream shows that inference to be invalid, because in dreaming the premises hold and the conclusion fails. Once that bridge is cut, the realist can no longer simply read off the existence of a material world from the character of experience. Combined with the atomism critique - which shows that the specific external objects the realist proposes, aggregates of partless atoms, are incoherent anyway - the two arguments together dismantle the confident realist picture from both ends: the proposed building blocks cannot do the building, and the usual reasons for believing in external objects do not actually license the belief. Whatever explains our experience, Vasubandhu concludes, it is not the swarm of little material particles common sense imagines.
This is the opening of the lesson. The rest — the dialogue, the primary source, and the recall — is in the app.
You learned Vasubandhu’s critique of atomism (a truly partless atom cannot combine, because contact requires sides and sides are parts) and his dream analogy (experience can be vivid, seemingly located in space and time, and causally effective without any external object). Explain both as arguments against inferring a…
Leads to Rene Descartes.
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