You've seen this. A hot road, and the air above it moving — not a thing, exactly, but a wavering that won't hold still and that you can't look at directly because there's nothing there to focus on.
That's the image the Śūraṅgama uses for what a practitioner meets at the fourth screen:
You'll be able to see into the root source of life for all the sentient beings in the universe, and it will seem to appear in the form of a "shimmering mirage." It's like a wavering, pure but glittering haze that's endlessly whirling about.1
Chuang Tzu's name for the same wavering heat haze is better. He calls it a wild horse, to capture the idea that this life force is a thing in constant motion just like flames or reflections of light.1 A haze you can't fix your eye on, and a horse nobody is riding. Both images say the same thing: the thing at this stage isn't an object. It's motion that won't resolve.
The claim attached is large, and it's worth stating precisely because it's more modest than it first sounds.
In reaching the volition skandha you won't yet be able to fully understand this root source of life, which is the pivot point of floating sense faculties and objects. However, when you reach this stage you will be able to understand the karmic causes behind all the various forms of rebirth throughout the cosmos.1
So: not comprehension of the source, but comprehension of why things take the shapes they take. Bodri's analogy is unusually clarifying — like understanding that all material objects are made up of atoms, but that atoms come in different sizes and shapes.1 You get the principle and the variety. You don't get the thing itself.
The Śūraṅgama passage puts the same point as a diagnosis of perception:
At this stage of cultivation things appear as shimmering mirages that disturb the mind's purity, and this explains the ultimate cause of the illusion of sense perception. This is called the skandha of volition, or action that passes on its effects.1
Action that passes on its effects. That's the cleanest gloss on saṃskāra in the corpus — not "will," not "impulse," but the property of an act that it doesn't stop when it finishes.
The contents are ordinary and the list is deliberately grim:
All our deeply seeded, habitual factors of mind such as belligerence, resentment, jealousy, dishonesty, deceit, hypocrisy, stinginess, haughtiness, shamelessness, absence of propriety, torpidmindedness, agitation, indolence, carelessness, forgetfulness, distraction, and non-discernment.2
And the note that the list can't be completed: the coverings of secondary defilements have limitless millions of divisions.2
The mechanism is the striking part, because it explains why these survive an attainment:
These negative habitual behaviors sprout when we least expect them because the volitional force is like a ceaseless subterranean stream that forever runs on and on.2
A stream you can't see, that never stops, and that surfaces where the ground happens to be thin. These are what remain after seeing the Tao — which is why the corpus places real cultivation after the attainment rather than before it.
The same authors' earlier book gives this force two more images, and both are about how hard it is to get out rather than about what it looks like. The force of volition is like a long nail hammered so deep into wood that it is difficult to remove.6 The reason given is that impulse and volition are bound up with the idea of an inherent ego, and with the attachments that arise as the six senses combine with the eight consciousnesses and revolve around a self.6 So the nail is not stuck in you — the nail is what you is made of, which is why nothing gets a grip on it.
The second image is a magnet. If we practise meditation and cannot let go of our thoughts, we reincarnate again and again, because this force is like a powerful magnetic field so strong that no piece of iron can escape its pull.6 Karma is described in the same passage as a hidden fine net spanning all the planes of existence, with threads too fine to make out until you are actually cultivating through this aggregate.6
There's a correction attached, aimed at a specific modern claim, and it's blunt. The New Age schools put a sugar coating on this by saying we choose the life we live each time before we are born. In actual fact it is karma that determines everything. The karmic force behind rebirth sets the life you are born to and all the situations you meet in it.7
Then the concession, which is what keeps this from being fatalism. There is nothing you can do about it unless you have the power of cultivation behind you. With it you can transform things, and even then only within karmic bounds. Only an enlightened master has the real power to choose how and where he goes.7
There's one sense in which the modern claim is allowed to stand. You can say we choose our karma, in that we are the ones who make it and are therefore the authors of our fates. But that is about all you can honestly say.7
The difference between the two positions is small on paper and total in practice. One says you sat down beforehand and picked this life. The other says you built it, over a very long time, and none of the building was a decision. What's available now is to keep building, since you can act in this life to change the fate you have made.7
The instruction is the corpus's standard one and here it has an unusually clean rationale:
To further progress in cultivation and reach the consciousness skandha, you have to let this life source settle and revert to its own nature. Without making any special effort — meaning the continued practice of true emptiness of mind — it will clarify very spontaneously and naturally.1
Let it settle. Not purify it item by item, which the list has just told you is impossible — limitless millions of divisions, and a new one will always arrive. And the image justifies the method in a way the doctrine elsewhere doesn't. You can't clarify moving water by working on it. Every intervention is more motion. The only operation that clarifies a suspension is stopping, and the Śūraṅgama says exactly that: if these mirage-like disturbances of our purity are allowed to revert to their original nature, and this original nature is allowed to revert to its original purity, then the purification follows.1
The metaphor is not decorative here. It is the argument — and it's the one place in this corpus where the no-effort instruction has a mechanism that any reader can check against something they have watched happen in a glass.
The surrounding chapter is about the alternative route, and it's priced explicitly. Someone taking good conduct as their whole path can indeed, from a theoretical standpoint, reach self-realization along this road — but taking this route to its completion stage will require three eons of ceaseless diligent effort — and that's with hardly any mistakes made in-between.3
The reason is a claim about what merit does and doesn't touch:
Merely accumulating merit will not remove ignorance and the screens of self-delusion which separate us from our self-nature. Meritorious deeds alone will not lead to a realization of our true nature unless you also act to purify the mind.3
Then the offer. Combine merit with meditation and you can awaken in only one life — or, for somebody a bit slower but still diligent, at most it will require only three lives.3 Bodri is careful not to let this become a licence, and the guard is well placed: if you say that practicing charity, generosity and compassion isn't necessary because everything is empty, then you are making the mistake of clinging to emptiness.3 Wang Yang-ming is quoted for the same failure from the Confucian side — men who made the mistake of falling into the state of emptiness and void, neglecting the service of family, country and world, because they did not know that 'loving the people' is the way of 'making manifest clear virtue'.3
Then the passage that saves the chapter from being a sermon, by admitting that it's one:
The call to merit making activities and good behavior is something you might just as well hear in a Sunday school sermon, but it's only the individual who accomplishes all this preliminary gong-fu who has enough attainment, and therefore enough "substance," to really say that the spiritual path is one of "doing good and refraining from evil."4
And:
It is said, "To purify one's own mind; that is the whole teaching of Buddha." It's also said, "Don't hesitate to do the smallest good deed, and avoid committing even the smallest evil." Even a child can say these things, but these principles are very hard to institute through materialized activity. Who can actually do them?4
Even a child can say these things. The content of the instruction isn't the difficulty and never was. What all the elaborate machinery is for isn't knowing what to do; it's becoming the kind of thing that does it — which is the most defensible statement of the whole book's purpose, and it arrives in a paragraph about Sunday school.
You aren't at the volition skandha. The stream is still worth knowing about, because it's the only part of this scheme that shows up in an ordinary week.
Here is what it looks like. You've been practising, things are genuinely better, and then on a Tuesday you say something cutting to someone who didn't deserve it — and it arrives fully formed, before any decision, from nowhere. Not a lapse in resolve. There was no moment at which you resolved.
That's the subterranean stream surfacing, and the framework's first contribution is to tell you it is expected. These sprout when we least expect them.2 A practice that had eliminated them wouldn't be a better practice; it would be a practice whose results you had not yet tested.
The second contribution is what not to do about it. Don't go after the item. The list has limitless millions of divisions, and the one you just caught is a sample, not the problem. Resolving never to say that particular thing again is how people spend decades building an inventory of specific vetoes while the stream runs on untouched.
Let it settle instead, which in practice means the unglamorous thing: notice it, decline to follow it, don't build a case about it either way, and go back to sitting. The water clarifies by being left alone. Every intervention is more motion.
And the check that keeps this honest, since let it settle is indistinguishable from do nothing if you're lazy: the stream surfaces in behaviour, and behaviour is public. Ask the people who live with you whether Tuesdays have changed. That's a real measurement and it's the only one available.
Two routes to the same destination get priced against each other, and the numbers are the most concrete thing in the chapter. Take good conduct as your whole path — charity, discipline, service, merit — and you can get there. That's conceded rather than grudged: someone on that road can indeed, from a theoretical standpoint, reach self-realization. The cost is three eons of ceaseless diligent effort — and then a clause that does more damage than the eons do: and that's with hardly any mistakes made in-between.3
Sit with the second half. An eon isn't a length of time anybody can picture, so the number on its own is just a way of saying not in your lifetime. The clause about mistakes is different. It says the estimate assumes near-perfect conduct throughout — so three eons is the best case for that route, available only to somebody who almost never slips, over a span nobody can imagine.
Now the other route. Combine the same virtuous conduct with meditation and samādhi, and you can awaken in only one life. And for somebody slower but still diligent on the same combined road, at most it will require only three lives.3 One life. Or three. Against three eons of near-flawless behaviour.
The reason given for the gap isn't that meditation is more powerful. It's that the two operations touch different things. Merely accumulating merit will not remove ignorance and the screens of self-delusion which separate us from our self-nature.3 Merit builds the stock. It doesn't lift the screens, and the screens are what the whole problem consists of — so a person who only accumulates is working hard on something adjacent to their difficulty.
Which is why the instruction that follows is put so flatly. If you don't practice meditation, don't ever expect to win enlightenment or even climb the ranks of samadhi.3 The comparison also explains why the chapter spends so long defending good conduct before demolishing it as a solo route. If merit were optional the argument would be easy. It isn't — you can't reach enlightenment without merit4 — so the position being staked out is narrow and awkward to hold: necessary, insufficient, and catastrophically slow on its own.
And the arithmetic is doing something a sermon can't. Do good and avoid evil is agreed to by everybody and changes nobody's Tuesday. Three eons against one life is a claim you could act on this week. It says where the marginal hour should go, and the answer is the half most people leave out — the sitting rather than the giving.
The mirage image does real explanatory work rather than ornamental work. It supplies a mechanism for the no-effort instruction and it forbids the obvious alternative, which is more than most images in this book manage.1 Action that passes on its effects is the clearest gloss on saṃskāra anywhere in the corpus. And the merit-only route is priced rather than merely disparaged — three eons against one life, or three lives for the slower.3
The tension the source doesn't close is about method. Let this life source settle… without making any special effort1 sits alongside an instruction to cut off residual streams of ignorance bit by bit. Settling and reducing bit by bit are different operations. Nothing says which is meant, and the list of contents argues for the first while the vocabulary of the second keeps appearing.
The numbers have a second problem. The three-eon figure is scriptural. The one-life and three-life figures are offered as an actual truth, not a lie, with no derivation — and those are the two that would change how a reader spends the next decade.3
A third tension is about knowing where you are. Limitless millions of divisions2 makes the contents of this screen unenumerable, which fits the settling method exactly and rules out any diagnostic that could tell a practitioner how far through they've got.
Sourcing is careful by this book's standards. Hui-neng comes via Yampolsky's Platform Sutra, Columbia 1967, p 168 and Cleary's Sutra of Hui-neng, Shambhala 1998, p 153; Wang Yang-ming via Julia Ching, To Acquire Wisdom, Columbia 1976, p 210; the eon figures via Nan Huai-Chin, Tao and Longevity, Samuel Weiser 1991, p 132.3 ⚠ The Śūraṅgama passage itself is quoted with no translation named, which is the one gap in an otherwise well-cited stretch. 🚩 SECONDARY WITHOUT PRIMARY throughout, and everything is [POPULAR SOURCE]. The standing scope limit applies too: this screen is worked after seeing the Tao, on a ladder footnote 518 calls false stages.5
Open question: the settling model forbids going after the habits one at a time. Is there any recorded case of somebody who did it the forbidden way and got somewhere — and would this tradition recognise such a case if it met one?
Read with Zen Sickness, this page is the theory and that one is the emergency. The subterranean stream surfacing is an abstraction until it's a man producing thirty poems he can't stop — and Han Shan's case is the best evidence in the corpus that the volition screen describes something real.
Against The Five Skandhas as Experiential Barriers, this is the fourth screen given its own treatment, and it's the one where the screening metaphor works best: the habits are genuinely between you and clear seeing, and they're genuinely not you. With The Extreme of Yin Gives Birth to Yang the settling image is that engine's best illustration — and this page shows what the engine looks like when it has a mechanism attached rather than a bare assertion.
Set beside Cause Side and Effect Side, the eon arithmetic is that page's economics: merit alone is the cheap half and it doesn't complete, and the expensive half is unavailable until the cheap half is done. And against Reading Attainment Off the Body, the behaviour test returns here in its strongest form. The volition skandha's contents are behavioural — belligerence, deceit, stinginess — so progress at this screen is externally visible in a way nothing at the form screen is.
Psychology — Sunk Costs and Character Persistence. That page carries a finding that most people resist: a pattern somebody has invested years in keeps operating after they've seen through it, and seeing through it does surprisingly little. The insight and the behaviour come apart, and the behaviour is the slower of the two by a long way, because it's running on something that was never made of beliefs.
That's this screen described without any of the vocabulary. The list here is behavioural and ordinary — belligerence, resentment, jealousy, dishonesty, deceit, hypocrisy, stinginess, haughtiness, shamelessness2 — and the whole point of placing it after seeing the Tao is that these survive the insight. The subterranean stream doesn't stop when you understand it. It surfaces when we least expect them, which is to say in whatever situation happens to be thin that week.
What the pairing gives is a prediction that neither side makes alone, and it's checkable in an ordinary life. If these were beliefs, the person who saw through them would improve across the board and steadily. If they're a stream running underneath, improvement should be patchy and situational — better in the conditions you practise in, unchanged in the conditions you rarely meet, and liable to produce something you thought you'd finished with under an unfamiliar pressure.
Which is what people actually report about themselves, and what the settling instruction is built for. You can't go after an unenumerable list one item at a time, and you can't argue with something that was never an argument. What you can do is stop stirring it and give it long enough.
And it sets a fair expectation for what progress at this screen looks like from outside. Not a person who no longer has these things. A person in whom they surface less often, less far, and are recognised faster when they do.
One handshake is the section here. A second would restate the same persistence from a neighbouring page rather than open new ground.
Sharpest implication. Sort a tradition's images by what they forbid. One that rules something out is doing the work of an argument and can be killed by a counter-case; one that rules nothing out is a mnemonic for a doctrine you already hold. The images a literature treasures are systematically the accommodating ones — they survive every new audience — which means the arguable content of a metaphor-rich tradition is concentrated in the images nobody quotes.
Generative questions.