Diamond Sutra Chapters 17-24: Can the Mind Be Grasped?

The Diamond Sutra says that past, present, and future mind cannot be grasped. The line is easy to read as an instruction to stay in the present. Chapter 18 goes further: even the present cannot serve as something permanent to hold onto. Around this passage, chapters 17-24 examine the same habit in helping others, making merit, and seeking awakening.

This guide continues chapters 9-16. It follows the customary 32-chapter arrangement of Kumarajiva's Chinese translation. The Chapter summary paragraphs are our own condensed English paraphrases; the discussion that follows is commentary. For the source, see the Diamond Sutra in CBETA, Taisho 235. A shorter overview is available in the Diamond Sutra's central teaching.

Chapter 17 returns to the opening question

Chapter summary: Subhuti again asks how those who aspire to unsurpassed awakening can abide and train their minds. The Buddha renews the vow to liberate all beings while denying that any being can be grasped as a fixed entity being liberated. He recalls Dipamkara Buddha's prediction that he would become Shakyamuni: there was no fixed Dharma he acquired as awakening. He calls all phenomena Buddha-Dharma while questioning any fixed idea of all phenomena. The chapter also examines the names Tathagata, bodhisattva, and Buddha land, ending with praise for the bodhisattva who understands the absence of self.

The repeated question may feel surprising halfway through the sutra. By now, however, the reader has heard how spiritual attainment can become a possession. The question reaches further: what happens to the idea of the person who is doing the practicing? The four notions of self, person, living being, and an enduring life are examined again at that level.

Dipamkara belongs to the Buddhist account of Shakyamuni's earlier lives. His prediction gives the passage a direction toward future awakening, even while the Buddha denies anything that can be acquired as a fixed object. This matters when reading "no attainment." The text retains a path, a vow, and a future Buddha. It questions the imagined owner of those things.

The same care applies to helping. A relative can receive support without becoming proof of the helper's worth. The help may still require effort, money, and patience. What loosens is the demand that another person's life confirm a particular image of ourselves. The chapter extends this examination to the vast bodhisattva work of preparing Buddha lands.

Chapter 18: Even the present slips from our grasp

Chapter summary: Subhuti affirms that the Buddha possesses the physical eye, divine eye, wisdom eye, Dharma eye, and Buddha eye. The Buddha then describes knowing the many kinds of minds of beings in innumerable worlds. Those minds cannot be fixed as independently existing minds. He explains this through past, present, and future mind: none can be grasped.

The five eyes belong to a traditional account of the Buddha's seeing and knowing. The passage lists them without explaining each separately. Its movement is from the breadth of the Buddha's knowledge to the nature of what is known. Countless minds are known, yet none can be captured as a lasting thing.

A memory is available now as a memory. It cannot give back the exact mental event that has passed. A future conversation can be imagined, though it has yet to occur. And the present feeling changes while it is being noticed. This is a useful everyday approach to the line, provided we keep its wider concern with emptiness in view. Simply replacing attachment to yesterday with attachment to a perfect present moment leaves the difficulty unresolved.

Planning and remembering remain possible. The chapter gives no reason to discard a calendar or ignore the consequences of an earlier decision. Its challenge is to the certainty that a thought can define a lasting self: "That failure is who I am," or "Once this happens, I will finally be complete." A thought can be acknowledged without being asked to carry that much weight.

Chapter 19: Merit without a fixed substance

Chapter summary: The Buddha asks whether giving treasures sufficient to fill a vast world-system produces much merit. Subhuti answers that it does. The Buddha then says that, if merit had a fixed reality of its own, he would not call it great; because it lacks such a fixed reality, he speaks of great merit.

This short exchange examines merit itself. The gift is acknowledged as a cause of merit, and the assumption that merit exists as a solid possession is questioned in the same exchange. Holding those statements together is the work of reading it.

An ordinary example is the wish to keep an exact account of one's goodness. A helpful action becomes a claim on future recognition or a reason other people ought to comply. The sutra's language gives us a way to examine that claim. It does not establish that a donation has an infinite value, that its practical effects cannot be assessed, or that merit can be exchanged for whatever the giver wants.

Chapter 20 looks beyond bodily perfection

Chapter summary: The Buddha asks whether he can be seen through the completeness of his physical body or through the completeness of his marks. Subhuti answers no to both. What is called a complete body or a complete set of marks cannot be held as an independently existing reality.

Earlier chapters asked whether appearances identify the Buddha. Here even perfection of appearance is insufficient. The point reaches beyond an obviously misleading surface: a body described as fully endowed with the traditional signs still cannot contain what awakening means. The sutra keeps the name while releasing the assumption that the name gives us a final grasp of its object.

For a reader considering a teacher, outward composure or ceremonial authority can be impressive. Neither establishes how that person behaves when questioned or how they treat people with less power. Observing conduct remains necessary; imagining a hidden spiritual essence would only introduce another assumption.

Chapter 21: How can the Buddha teach no Dharma?

Chapter summary: The Buddha warns against imagining that he holds the thought of setting forth a Dharma. To say that he teaches in that sense misrepresents him. Teaching is spoken of while no fixed Dharma can be grasped as what is taught. When Subhuti asks about future beings who will trust this teaching, the Buddha also challenges treating those beings as fixed entities or denying them altogether.

The Buddha is speaking as he questions what it means to speak Dharma. That context makes a literal reading of total silence difficult to sustain. The dialogue asks whether truth can be made into an object that a teacher owns and transfers intact to a listener.

Words matter because they can guide understanding. Their usefulness also depends on how they are heard. The raft image in chapter 6 helps here: a teaching can be used with care without becoming something to cling to. The passage about future beings extends that care to the audience. A label for a person cannot capture everything about that person's conditions, capacities, or future.

Chapter 22 and the wish to acquire awakening

Chapter summary: Subhuti asks whether the Buddha's unsurpassed awakening involves nothing obtained. The Buddha affirms this: not even the smallest Dharma has been acquired. This is what is called unsurpassed awakening.

The brevity makes the exchange sound almost final. Yet chapter 23 immediately continues with wholesome action. Reading the two together prevents "nothing obtained" from becoming an excuse to abandon practice. A change in understanding and conduct can be real in ordinary experience without an enduring owner acquiring a permanent spiritual object. Calm, insight, and a feeling of certainty are also experiences to examine. None becomes proof of complete awakening simply because it feels unusually powerful.

Chapter 23: Doing good still matters

Chapter summary: The Buddha describes unsurpassed awakening as equal, without higher or lower. It is realized through cultivating wholesome actions without attachment to self, person, living being, or an enduring life. Even the designation of those actions as wholesome is examined rather than treated as a fixed essence.

This is a helpful passage to return to when the language of emptiness begins to sound indifferent. The text explicitly says to cultivate what is wholesome. It also asks that this cultivation be free of the four notions. An apology can acknowledge a harmful action and attempt to repair it without turning into a performance of being an exceptionally good person.

Equality in this passage concerns awakening. It does not make all actions equally beneficial or give every person's interpretation equal accuracy. Attention to consequences and a willingness to correct mistakes remain part of responsible practice. The denial of fixed goodness cannot reasonably be used to make cruelty acceptable.

Chapter 24: Why return to the four-line verse?

Chapter summary: The Buddha imagines a gift of treasures piled as high as all the Mount Sumerus in a vast world-system. He compares it with receiving, upholding, reciting, and explaining even a short verse of this perfection-of-wisdom teaching. The latter merit is described as exceeding the former beyond calculation.

Mount Sumeru is the great mountain of Buddhist cosmology. Its use makes the scale of the offering vivid. The comparison returns us to an earlier theme: a small amount of teaching can have a liberating importance that material size does not measure. It still takes understanding to explain a passage. The number of words alone cannot tell us whether an explanation is helpful.

Chapter 19 questioned merit as a possession; chapter 24 praises transmitting wisdom. Together they leave an awkward question for anyone who teaches or shares a quotation: is the aim to help someone understand, or to accumulate another sign of one's own importance? The answer can change from one moment to the next. That makes the question worth keeping open.

The closing chapters, 25-32, examine a further temptation: turning emptiness itself into a fixed view. They end with the images of a dream, an illusion, a bubble, and a shadow.