Reading group: Vasubandhu’s Twenty Verses, and whether ‘mind-only’ means idealism
Vasubandhu's Twenty Verses (Viṃśatikā), with his own short commentary, is the most compact argument for the Yogācāra claim that there is "only consciousness" (vijñaptimātra). It is also the text that most invites the question of whether Yogācāra is a form of idealism, a phenomenology, or something else. Scholars disagree, and I'd like us to read it before forming a view.
Translation: Stefan Anacker's Seven Works of Vasubandhu (1984) includes it with the commentary. Other translations are fine; post which you use.
Week 1. The objections. If there are no external objects, why do we experience things only at certain places and times? Why do different people perceive the same thing? Why do things have effects? Vasubandhu answers with dreams, with the hungry ghosts who all see a river of pus where humans see water, and with the guardians of hell.
Week 2. The atoms. His argument that external objects can't be made of atoms: an atom joined to others on six sides would have six parts, and so would not be an atom.
Week 3. Other minds and karma. If everything is consciousness, how do minds affect each other, and how do actions have consequences?
At the end I'd like each of us to say how we would classify the text: ontological idealism, epistemological caution, phenomenological method, or something our categories don't fit.