The Tathāgata's Lifespan
如來壽量品第十六
Maitreya's chapter ended in doubt: how could the Buddha, awakened barely forty years ago, have personally trained an assembly this vast? This chapter is the answer, and it is the doctrinal center of the entire sūtra — after three-fold assurances that what follows will be difficult to accept, the Buddha declares that his birth at the Śākya palace and his awakening at Gayā were themselves skillful means, that he has, in fact, been a buddha for a span of time this sūtra itself declines to number, and that his own eventual parinirvāṇa will be a further skillful means, taught through the parable of a physician who tells his poisoned children he has died, so that they will finally take the medicine he has already left for them.
- This part covers
- The Buddha's three-fold assurance that the assembly must simply accept what he is about to say, followed by the declaration that he has, in truth, been awakened for a span of time beyond the counting even of an inconceivable parable involving five hundred thousand myriad koṭis of worlds ground to dust; his explanation that every past buddha he has named, and his own birth, departure from home, and awakening at Gayā, were all skillful means adapted to what each audience was ready to hear; his account of why he still speaks of entering parinirvāṇa at all, if his lifespan is truly without end; and the parable of a skilled physician whose sons, poisoned and unwilling to take the cure he has left them, only do so once he sends word from a distant land that he has died.
- Why it matters
- This is the chapter the sūtra's whole second half exists to reach. Zhiyi's commentarial tradition calls what came before this point the "trace gate" (迹門) — the three vehicles opened to reveal the one vehicle — and calls this chapter the start of the "origin gate" (本門): not what the Buddha teaches, but who he actually is, and how long he has actually been that. Everything Parts 1 through 16 established about skillful means now applies to the Buddha's own biography.
1. Three-Fold Assurance, and the Dust-Mote Kalpas
爾時，佛告諸菩薩及一切大眾：「諸善男子！汝等當信解如來誠諦之語。」復告大眾：「汝等當信解如來誠諦之語。」又復告諸大眾：「汝等當信解如來誠諦之語。」 是時菩薩大眾，彌勒為首，合掌白佛言：「世尊！唯願說之，我等當信受佛語。」如是三白已，復言：「唯願說之，我等當信受佛語。」 爾時世尊知諸菩薩三請不止，而告之言：「汝等諦聽，如來祕密神通之力。一切世間天、人及阿修羅，皆謂：『今釋迦牟尼佛，出釋氏宮，去伽耶城不遠，坐於道場，得阿耨多羅三藐三菩提。』然，善男子！我實成佛已來無量無邊百千萬億那由他劫。譬如五百千萬億那由他阿僧祇三千大千世界，假使有人末為微塵，過於東方五百千萬億那由他阿僧祇國乃下一塵，如是東行，盡是微塵。諸善男子！於意云何？是諸世界，可得思惟校計知其數不？」 彌勒菩薩等俱白佛言：「世尊！是諸世界，無量無邊，非算數所知，亦非心力所及；一切聲聞、辟支佛，以無漏智，不能思惟知其限數；我等住阿惟越致地，於是事中亦所不達。世尊！如是諸世界，無量無邊。」 爾時佛告大菩薩眾：「諸善男子！今當分明宣語汝等。是諸世界，若著微塵及不著者盡以為塵，一塵一劫，我成佛已來，復過於此百千萬億那由他阿僧祇劫。自從是來，我常在此娑婆世界說法教化，亦於餘處百千萬億那由他阿僧祇國導利眾生。」
At that time the Buddha said to the bodhisattvas and the whole great assembly: "Good sons! You should believe and accept the Tathāgata's own truthful words." He said to the great assembly a second time: "You should believe and accept the Tathāgata's own truthful words." And he said to the great assembly a third time: "You should believe and accept the Tathāgata's own truthful words." At that time the assembly of bodhisattvas, with Maitreya foremost among them, joined their palms and said to the Buddha: "World-Honored One! We beg only that you teach it — we shall believe and accept the Buddha's own words." Having said this three times, they said once more: "We beg only that you teach it — we shall believe and accept the Buddha's own words." At that time the World-Honored One, knowing that the bodhisattvas would not cease their three-fold request, said to them: "Listen closely, all of you, to the Tathāgata's own secret power of spiritual penetration. Every being in the world — gods, humans, and asuras alike — all suppose that Śākyamuni Buddha, having gone forth from the Śākya palace, traveled only a short way from the city of Gayā, sat at the place of awakening, and there attained unsurpassed, perfect and complete awakening. Yet, good sons, in truth it has been immeasurable, boundless hundreds of thousands of myriads of koṭis of nayutas of kalpas since I actually attained buddhahood. Suppose there were five hundred thousand myriad koṭis of nayutas of asaṃkhyeyas of three-thousand-great-thousandfold worlds, and someone were to grind them all to fine dust, then travel eastward, past five hundred thousand myriad koṭis of nayutas of asaṃkhyeya lands, and there drop a single mote of that dust — and continue traveling east in this way until every mote of dust had been dropped. Good sons, what do you think? Could the total number of all these worlds be conceived of, or calculated, or known?" Maitreya Bodhisattva and the others all said to the Buddha: "World-Honored One! These worlds are immeasurable and boundless, beyond the knowledge of any calculation, beyond the reach of any power of mind; not even every śrāvaka and pratyekabuddha, with their own outflow-free wisdom, could conceive of or know their number; even we ourselves, who dwell in the state that never turns back, cannot penetrate this matter. World-Honored One, these worlds are truly immeasurable and boundless." At that time the Buddha said to the great assembly of bodhisattvas: "Good sons! I shall now declare this to you plainly. Of these worlds, take every one that received a mote of dust, and every one that did not, and grind them all, together, to dust once more — and let a single mote of that dust stand for a single kalpa. It has been longer than the total of all these kalpas since I actually attained buddhahood. From that time until now, I have constantly dwelt in this sahā world, teaching and transforming beings, and have, besides, in hundreds of thousands of myriads of koṭis of nayutas of other lands, guided and benefited beings there as well."
Zhiyi counts the assurances carefully: three requests from the assembly, met with three declarations before the Buddha even begins to speak — one more assurance-cycle than the parallel moment in Part 14's chapter on the sūtra itself, which Zhiyi reads as a sign of how much more this particular disclosure needs bracing for. The dust-mote parable that follows answers a number with the refusal of a number: Maitreya's own assembly, dwelling in the state that never turns back, cannot calculate it, and neither, the text is careful to note, can any arhat or pratyekabuddha using unlimited wisdom. The measure offered is not a very large finite quantity but a demonstration that ordinary counting has already failed several steps before the true span is even named.
2. Every Birth and Death Is Skillful Means
「諸善男子！於是中間，我說燃燈佛等，又復言其入於涅槃，如是皆以方便分別。 「諸善男子！若有眾生來至我所，我以佛眼，觀其信等諸根利鈍，隨所應度，處處自說，名字不同、年紀大小，亦復現言當入涅槃，又以種種方便說微妙法，能令眾生發歡喜心。 「諸善男子！如來見諸眾生樂於小法、德薄垢重者，為是人說：『我少出家，得阿耨多羅三藐三菩提。』然我實成佛已來久遠若斯，但以方便，教化眾生，令入佛道，作如是說。 「諸善男子！如來所演經典，皆為度脫眾生，或說己身、或說他身，或示己身、或示他身，或示己事、或示他事，諸所言說，皆實不虛。所以者何？如來如實知見三界之相，無有生死、若退若出，亦無在世及滅度者，非實非虛，非如非異，不如三界見於三界，如斯之事，如來明見，無有錯謬。以諸眾生有種種性、種種欲、種種行、種種憶想分別故，欲令生諸善根，以若干因緣、譬喻、言辭種種說法，所作佛事，未曾暫廢。如是，我成佛已來，甚大久遠，壽命無量阿僧祇劫，常住不滅。」
"Good sons! Throughout this entire span of time, I have spoken of Dīpaṃkara Buddha and others like him, and have, further, said that they entered parinirvāṇa — all of this was said only as a distinction made by skillful means. "Good sons! Should any being come into my presence, I observe, with the buddha eye, the sharpness or dullness of their faculties of faith and the rest, and, according to what they need to be brought across, I speak of myself in various places under various names, with a lifespan of various lengths, and I also declare, in each case, that I am about to enter parinirvāṇa — and by every kind of skillful means, I teach the subtle and wondrous Dharma, so as to cause beings to give rise to a joyful heart. "Good sons! When the Tathāgata sees beings who delight in the lesser teachings, whose merit is thin and whose defilements are heavy, for the sake of such people I say: 'I went forth from home while still young, and attained unsurpassed, perfect and complete awakening.' Yet, in truth, it has been this long, this immeasurably long, since I actually attained buddhahood — I say this only as a skillful means, to teach and transform beings, and cause them to enter the buddha-path. "Good sons! Every scripture the Tathāgata expounds is spoken only to bring beings across to liberation. Sometimes I speak of my own self, sometimes of another; sometimes I reveal my own self, sometimes another; sometimes I point to my own affairs, sometimes to another's — yet everything I say is entirely true, never false. Why is this so? Because the Tathāgata sees and knows, exactly as it truly is, the mark of the three realms: there is no birth and death within them, no retreating and no emerging from them, no one dwelling in the world and no one who attains extinction, nothing real and nothing unreal, nothing that is thus and nothing that is otherwise — not as the three realms themselves see the three realms. Such a matter as this the Tathāgata sees with total clarity, without the slightest error. Yet because beings have every kind of nature, every kind of desire, every kind of conduct, and every kind of thought and discrimination, and because I wish to cause them to give rise to every kind of good root, I teach the Dharma by means of every kind of cause and condition, every kind of parable, and every kind of expression — the buddha-work I do has never, even for a moment, ceased. In this way, it has been an exceedingly great span of time, immeasurable asaṃkhyeya kalpas, since I actually attained buddhahood, dwelling always, never extinguished."
Zhiyi reads the passage on the Tathāgata's "true knowledge and vision of the mark of the three realms" as this chapter's own statement of what the earlier Devadatta and Peaceful Practices chapters had already been assuming: that the Buddha's teaching activity — appearing under different names, with different lifespans, in different places — is not a series of separate events but a single, continuous, and fully truthful undertaking, adapted without exception to what each audience is actually able to receive. "I went forth from home while still young, and attained awakening" is placed in exactly the same category as the deaths of Dīpaṃkara and the other ancient buddhas named earlier in the sūtra: not a falsehood, but a skillful means offered to "those who delight in the lesser teachings" — the sūtra's own phrase for its intended first readers, not a judgment passed on any reader now.
3. Why the Buddha Still Speaks of Extinction
「諸善男子！我本行菩薩道所成壽命，今猶未盡，復倍上數。然今非實滅度，而便唱言：『當取滅度。』如來以是方便，教化眾生。所以者何？若佛久住於世，薄德之人，不種善根，貧窮下賤，貪著五欲，入於憶想妄見網中。若見如來常在不滅，便起憍恣而懷厭怠，不能生難遭之想、恭敬之心。是故如來以方便說：『比丘當知！諸佛出世，難可值遇。』所以者何？諸薄德人，過無量百千萬億劫，或有見佛，或不見者，以此事故，我作是言：『諸比丘！如來難可得見。』斯眾生等聞如是語，必當生於難遭之想，心懷戀慕，渴仰於佛，便種善根。是故如來雖不實滅，而言滅度。」
"Good sons! The lifespan I originally attained through practicing the bodhisattva path is, even now, still far from exhausted — more than twice the number already given remains. Yet even now, though I have not truly attained extinction, I nonetheless declare: 'I am about to attain extinction.' The Tathāgata teaches and transforms beings by means of this very skillful means. Why is this so? Because if a buddha were to dwell long in the world, people of thin merit, having planted no good roots, poor and lowly, greedily attached to the five desires, would fall into the net of vain thoughts and false views. Should they see that the Tathāgata dwells forever and is never extinguished, they would grow arrogant and self-indulgent, and their hearts would fill with weariness and indolence, unable to give rise to a sense of how rare an encounter this is, or to a reverent heart. It is for this reason that the Tathāgata teaches, by skillful means, saying: 'Monks, you should know: it is difficult indeed to encounter a buddha appearing in the world.' Why is this so? Because people of thin merit, throughout immeasurable hundreds of thousands of myriads of koṭis of kalpas, may sometimes see a buddha, and sometimes not — and because of this very fact, I say: 'Monks, the Tathāgata is difficult indeed to see.' Beings who hear words such as these will certainly give rise to a sense of how rare an encounter this is, their hearts filled with longing, thirsting to gaze upon the Buddha — and so they will plant good roots. It is for this reason that the Tathāgata, though he has not truly attained extinction, nonetheless speaks of attaining extinction."
This is the passage where the chapter's claim becomes most concrete, and it is worth being exact about what it does and does not say. The sūtra does not deny that the historical Buddha's death at Kuśinagara, roughly eighty years after his birth, took place — nothing in this chapter, or anywhere else in the received textual tradition, treats that death as fictional in the ordinary sense. What it claims instead is that the timing and manner of that death were themselves a teaching, chosen rather than merely suffered, offered because — in the text's own blunt diagnosis — beings who believed a buddha would always be available to them would grow complacent, and only the rarity of the encounter makes beings value it enough to act. Zhiyi's tradition names this the distinction between the Buddha's "trace" (迹), the historical figure born at the Śākya palace and extinguished at eighty, and his "origin" (本), a duration the sūtra itself, a few lines earlier, declined to render as any finite number at all.
Zhiyi is candid, in his own commentary, that this "immeasurable" (無量) has been read two different ways even within the tradition he inherited: some earlier commentators took the sūtra's numbers, however vast, as still technically finite — an inconceivably long but bounded span, on the model of Amitābha's own bounded lifespan in other sūtras — while others, including Zhiyi's own reading here, took the text's repeated refusal to name any endpoint at all as pointing to something closer to true infinity, the Dharma-body's lifespan as such, which is "neither existent nor nonexistent" and therefore not the kind of thing that could be numbered in the first place, even by inconceivably large numbers. The sūtra's own text supports either reading; this site does not resolve the question in either direction, and neither, on his own explicit statement, did Zhiyi.
4. The Parable of the Good Physician's Poisoned Sons
「又，善男子！諸佛如來，法皆如是，為度眾生，皆實不虛。譬如良醫，智慧聰達，明練方藥，善治眾病。其人多諸子息——若十、二十乃至百數，以有事緣，遠至餘國。諸子於後，飲他毒藥，藥發悶亂，宛轉于地。是時其父還來歸家，諸子飲毒，或失本心、或不失者，遙見其父，皆大歡喜，拜跪問訊：『善安隱歸。我等愚癡，誤服毒藥，願見救療，更賜壽命。』父見子等苦惱如是，依諸經方，求好藥草，色香美味皆悉具足，擣篩和合與子令服，而作是言：『此大良藥，色香美味皆悉具足，汝等可服，速除苦惱，無復眾患。』其諸子中不失心者，見此良藥、色香俱好，即便服之，病盡除愈。餘失心者，見其父來，雖亦歡喜問訊，求索治病，然與其藥而不肯服。所以者何？毒氣深入，失本心故，於此好色香藥而謂不美。父作是念：『此子可愍，為毒所中，心皆顛倒。雖見我喜，求索救療；如是好藥而不肯服。我今當設方便，令服此藥。』即作是言：『汝等當知！我今衰老，死時已至，是好良藥，今留在此，汝可取服，勿憂不差。』作是教已，復至他國，遣使還告：『汝父已死。』是時諸子聞父背喪，心大憂惱而作是念：『若父在者，慈愍我等，能見救護，今者捨我遠喪他國。』自惟孤露，無復恃怙，常懷悲感，心遂醒悟，乃知此藥色味香美，即取服之，毒病皆愈。其父聞子悉已得差，尋便來歸，咸使見之。 「諸善男子！於意云何？頗有人能說此良醫虛妄罪不？」 「不也，世尊！」 佛言：「我亦如是，成佛已來、無量無邊百千萬億那由他阿僧祇劫，為眾生故，以方便力、言當滅度，亦無有能如法說我虛妄過者。」
"Furthermore, good sons! The Dharma of every buddha and tathāgata is exactly the same in this respect: it is spoken only to bring beings across to liberation, and it is entirely true, never false. Suppose there were a good physician, wise and understanding, well versed in medicine, skilled at curing every illness. This man had many sons — ten, or twenty, or even as many as a hundred — and, having some business to attend to, he traveled far away to another land. After he had gone, his sons drank another's poison; the poison took effect, and, their minds thrown into confusion, they writhed upon the ground. At that time their father returned home. Seeing him from afar, his sons — some who had lost their right minds to the poison, and some who had not — were all filled with joy, and bowing and kneeling, greeted him, saying: 'How good that you have returned safely! In our foolishness, we mistakenly drank poison — we beg you to save and cure us, and grant us our lives once more.' Seeing his sons in such suffering, the father, following medical texts, sought out fine medicinal herbs, complete in color, fragrance, and flavor, ground and sifted them, mixed them together, and gave them to his sons to drink, saying: 'This is an excellent medicine, complete in color, fragrance, and flavor — you should drink it, and swiftly rid yourselves of this suffering, with no further affliction.' Among his sons, those who had not lost their right minds, seeing that this fine medicine was good both in color and in fragrance, drank it at once, and were entirely cured of their illness. But the rest, who had lost their right minds, though they too were glad to see their father return, and asked him to cure their sickness, would not, once given the medicine, consent to drink it. Why was this so? Because the poison had penetrated so deeply, and their right minds were so lost, that they took even this good medicine, fine in color and fragrance, to be without any good taste at all. The father thought to himself: 'These sons are to be pitied. Struck by the poison, their minds are entirely inverted. Though they are glad to see me, and beg me to save and cure them, they will not drink so fine a medicine as this. I shall now devise a skillful means, to cause them to drink this medicine.' He then said to them: 'You should know that I am now old and failing, and the time of my death has come. This fine, excellent medicine I now leave here with you — you should take and drink it, and have no fear that it will fail to cure you.' Having taught them in this way, he went once more to another land, and sent a messenger back to tell them: 'Your father has died.' At that time his sons, hearing that their father had passed away in a distant land, were filled with great grief, and thought to themselves: 'If our father were alive, he would have pitied us, and been able to save and protect us — but now he has forsaken us, and died far away in another land.' Reflecting that they were now orphaned, with no one left to rely on, their hearts constantly filled with grief, they came at last to their senses, and only then knew that this medicine was truly fine in color, flavor, and fragrance; they took it and drank it at once, and were entirely cured of the poison's illness. Their father, hearing that his sons had all been cured, then returned home at once, and let them all see him again. "Good sons, what do you think? Could anyone say that this good physician had committed the offense of speaking falsely?" "No, World-Honored One, they could not." The Buddha said: "I am exactly the same. It has been immeasurable, boundless hundreds of thousands of myriads of koṭis of nayutas of asaṃkhyeya kalpas since I attained buddhahood, and for the sake of beings, by the power of skillful means, I say that I am about to attain extinction — yet there is no one who could rightly say of me the offense of speaking falsely."
「自我得佛來， 所經諸劫數， 無量百千萬， 億載阿僧祇， 常說法教化， 無數億眾生， 令入於佛道。 爾來無量劫， 為度眾生故， 方便現涅槃， 而實不滅度， 常住此說法。 我常住於此， 以諸神通力， 令顛倒眾生， 雖近而不見。 眾見我滅度， 廣供養舍利， 咸皆懷戀慕， 而生渴仰心。 眾生既信伏， 質直意柔軟， 一心欲見佛， 不自惜身命。 時我及眾僧， 俱出靈鷲山， 我時語眾生： 『常在此不滅， 以方便力故， 現有滅不滅。』 餘國有眾生， 恭敬信樂者， 我復於彼中， 為說無上法。 汝等不聞此， 但謂我滅度。 我見諸眾生， 沒在於苦惱， 故不為現身， 令其生渴仰， 因其心戀慕， 乃出為說法。 神通力如是， 於阿僧祇劫， 常在靈鷲山， 及餘諸住處。 眾生見劫盡， 大火所燒時， 我此土安隱， 天人常充滿。 園林諸堂閣， 種種寶莊嚴， 寶樹多花菓， 眾生所遊樂。 諸天擊天鼓， 常作眾伎樂， 雨曼陀羅花， 散佛及大眾。 我淨土不毀， 而眾見燒盡， 憂怖諸苦惱， 如是悉充滿。 是諸罪眾生， 以惡業因緣， 過阿僧祇劫， 不聞三寶名。 諸有修功德， 柔和質直者， 則皆見我身， 在此而說法。 或時為此眾， 說佛壽無量， 久乃見佛者， 為說佛難值。 我智力如是， 慧光照無量， 壽命無數劫， 久修業所得。 汝等有智者， 勿於此生疑， 當斷令永盡， 佛語實不虛。 如醫善方便， 為治狂子故， 實在而言死， 無能說虛妄。 我亦為世父， 救諸苦患者， 為凡夫顛倒， 實在而言滅。 以常見我故， 而生憍恣心， 放逸著五欲， 墮於惡道中。 我常知眾生， 行道不行道， 隨所應可度， 為說種種法。 每自作是意， 以何令眾生， 得入無上慧， 速成就佛身。」
"Since I myself attained buddhahood, the number of kalpas that have passed is immeasurable, hundreds of thousands of myriads, koṭis of asaṃkhyeyas — constantly teaching the Dharma, transforming countless koṭis of beings, causing them to enter the buddha-path. From that time until now, immeasurable kalpas have passed; for the sake of bringing beings across, by skillful means I appear to enter nirvāṇa, yet in truth I do not attain extinction — I dwell always here, teaching the Dharma. I dwell always here, and by every kind of spiritual power, I cause inverted beings, though near to me, not to see me. The multitude, seeing me attain extinction, broadly make offerings to my relics, every one of them filled with longing, giving rise to a heart that thirsts to see me. Once beings have come to believe and submit, their minds honest and gentle, wholeheartedly wishing to see the Buddha, not sparing even their own bodies and lives — then I, together with the assembly of monks, together appear on Vulture Peak, and I say to beings then: 'I dwell always here, never extinguished; by the power of skillful means, I show both extinction and non-extinction.' In other lands there are beings, reverent, believing, and joyful, and among them, too, I teach the unsurpassed Dharma. You yourselves do not hear of this, and suppose only that I have attained extinction. I see beings sunk in suffering and affliction, and so I do not show myself to them, causing their thirst for me to grow — and only once their hearts are filled with longing do I then appear, and teach the Dharma. Such is the power of spiritual penetration: for asaṃkhyeya kalpas, I dwell always on Vulture Peak, and in every other dwelling place besides. When beings see the kalpa ending, consumed by the great fire, this land of mine remains safe and at peace, always filled with gods and humans. Gardens and groves, halls and pavilions, adorned with every kind of jewel, jeweled trees heavy with flowers and fruit, where beings wander and take their joy — the gods beat heavenly drums, constantly making music of every kind, and rain down mandārava flowers, scattering them over the Buddha and the great assembly. My pure land is never destroyed, yet the multitude see it burned entirely away, filled everywhere with grief, terror, and every kind of suffering. These beings, guilty of transgression, by the causes and conditions of evil karma, pass through asaṃkhyeya kalpas without hearing even the name of the Three Treasures. But all those who cultivate merit, who are gentle, honest, and upright — these see my very body, dwelling right here, teaching the Dharma. At times, for the sake of this multitude, I teach that the Buddha's lifespan is immeasurable; and to those who see the Buddha only after a long time, I teach how rare it is to encounter a buddha at all. Such is the power of my wisdom: its light of insight shines without limit, my lifespan lasting countless kalpas, attained through long cultivation of karma. You who have wisdom, give rise to no doubt in this matter — cut it off, and let it be forever ended, for the Buddha's own words are true, never false. Like the physician's skillful means, who, to cure his deluded sons, though alive, declared that he had died, and no one could say he had spoken falsely — I too am a father to the world, saving all who suffer and are afflicted; for the sake of ordinary, inverted beings, though truly present, I say I have attained extinction. For if they were to see me constantly, they would give rise to arrogance and self-indulgence, growing careless, attached to the five desires, and fall into the evil paths. I constantly know which beings practice the path, and which do not, and according to what each needs to be brought across, I teach them every kind of Dharma. Every moment, I think to myself only this: by what means may I cause beings to enter the unsurpassed wisdom, and swiftly accomplish the buddha's own body?"
Zhiyi reads the physician's ten possible kinds of medical skill as a scale running from the crudest wrong teachings up through the śrāvaka and pratyekabuddha vehicles, the bodhisattva vehicles of the various provisional teachings, and finally to the Tathāgata alone, who can cure every illness at once and restore his patients to a health that exceeds what they had before — his gloss for buddhahood itself, as opposed to any partial attainment. The parable's crucial detail, on this reading, is not the false report of death itself, but the sons' own state beforehand: some, "not having lost their right minds," take the medicine as soon as it is offered and are cured immediately; only those whose minds the poison has already inverted require the shock of believing themselves abandoned before they will act. The false report of death is aimed at exactly this second group — not a comment on what the medicine is, but on what it takes for someone in that condition to actually use it.
Read against Part 16's cliffhanger, this parable closes the argument that chapter opened. Maitreya asked how the Buddha could have taught so vast an assembly in only forty years; the answer given here is not a retraction of the historical account but a claim that lies beneath and beyond it — the physician did leave home, did return, and did send that message, and none of it was false, precisely because all of it served the sons' actual cure. What the historical eighty-year lifespan measures, on this reading, is the visible portion of an activity that this chapter's own numbers refuse to bound.