The same question, asked again

Something happens here that readers often take for a scribal error or a sign that the text was assembled from two recensions. Subhūti asks his opening question again — the same question, in the same words.

The question is identical to section 2, and the answer is nearly identical to section 3. Whatever the text's compositional history, the effect on a reader who has come through sixteen sections is specific and worth naming: you have not moved. Fourteen sections of argument, and the question is exactly where it was.

That is not a failure of the sūtra. It is the sūtra's shape. This is not a text that builds toward a conclusion you did not have at the start; it is a text that returns you to the same place repeatedly until the place is different. The answer was always available in section 3. What has changed by section 17 is only what you can hear in it.

Then the second half makes the inversion explicit, using Dīpaṃkara again:

Section 10 said nothing was attained in Dīpaṃkara's presence. Section 17 goes further and makes it the reason the prediction could be made at all. Had there been a fixed thing to get, the prediction would have been impossible — because a fixed thing already fixed is not something anyone becomes.

This is the same inversion the Madhyamaka elective found in the chapter on the four truths: only what is empty can change, so only where nothing is fixed can anyone become anything. The Diamond Sūtra reaches it by a different road and states it in a sentence.

Worth noticing before the famous part: this is a run of five straight yes answers. The physical eye, the divine eye, the wisdom eye, the dharma eye, the buddha eye — the Tathāgata has all of them, affirmed without qualification. A sūtra that has spent seventeen sections denying things here affirms five in a row, starting with the ordinary physical eye. Whatever this text is doing, it is not denial for its own sake.

過去心不可得，現在心不可得，未來心不可得. Eighteen characters, and along with section 10's ten, the most quoted passage in Chan.

There is a famous Chan story attached to it, well outside this sūtra: a renowned scholar of the Diamond Sūtra, travelling south with his commentaries, stops to buy refreshment from an old woman selling rice cakes. She asks what he carries, learns it is a commentary on this text, and says she will give him the cakes for free if he can answer one question — the mind of the past cannot be grasped, the mind of the present cannot be grasped, the mind of the future cannot be grasped; with which mind will you eat? He cannot answer. In the tradition, he burns the commentaries.

The story is not in the sūtra and is not evidence of anything. It is worth telling because it identifies precisely what the line does. It is not a metaphysical claim to be filed; it is a question that can be asked of you at any moment and has no available answer, and its effect is to stop the thing that was about to answer.

And notice the logical order. The Buddha knows every mind — because minds are no minds. The knowing is not compromised by the ungraspability; it is grounded in it. What cannot be grasped as an object is precisely what is not separate enough to be missed.

This is the clearest statement of the arithmetic point the course has met three times now, and it is worth quoting to anyone who thinks emptiness diminishes things. If merit had a substantial nature, the Tathāgata would not speak of gaining great merit. Substance would be the limitation. Greatness is possible only where nothing is fixed.

The question from section 5 returns for the third time. Body, then marks; twice in one section; the formula run out in full each time. By now the repetition should feel less like padding and more like what it is — the sūtra applying pressure at the same point until something gives.

From section 17 onwards, a reader keeping track will notice that the sūtra is covering ground it has covered. The bodhisattva vow, Dīpaṃkara, the thirty-two marks, the merit comparison, the four notions — all of them have appeared before, several of them twice.

Scholars have long read this as evidence that the text grew in layers, and it may well have. But the repetitions are not identical, and the differences are the interesting part. Section 3 stated the vow; section 17 states it and then explains why the prediction was possible. Section 5 asked about bodily marks and gave two steps of the formula; section 13 gave three; section 20 runs it twice in one section, on the body and on the marks separately.

The pattern is a spiral rather than a circle. Each return is at a slightly different depth, and the text assumes you will notice the difference rather than the sameness. That is also why reading four sections a week works better than reading the whole thing in an hour: the spiral is only visible if you are far enough along to remember where you were.