In the vast ocean of Buddhist wisdom, "dream" (svapna) is far more than a fleeting literary metaphor — it is a central image used in Mahāyāna scriptures such as the *Mahāratnakūṭa Sūtra* (《大寶積經》) to unlock the truth of the world and the mystery of birth and death.
People habitually oppose dream to waking reality, taking the dream as illusory and the waking world as real. Yet the genius of Buddhist wisdom lies precisely here: it uses our shared agreement that "dreams are delusive" to shatter our clinging to the notion that "reality is real," and then, through the mechanism of the dream, perfectly expounds the most difficult-to-understand mechanism of life's flowing-on: "no self, yet karmic retribution."
I. What This Concept Is Saying
To see the meaning of "dream" within the grand landscape of the path to liberation, one must grasp several core layers of its classical doctrinal framework:
1. Dharmas Are Non-Substantial and Provisionally Designated: Neither Arisen Nor Abiding, Yet Bearing Only Provisional Names Without Real Action
In the *Mahāratnakūṭa Sūtra*, the Buddha states plainly: "一切法如幻，覆众生心故，虚妄犹如梦。" ("All dharmas are like illusions; because they cover the minds of sentient beings, they are delusive, like dreams.") The core nature of the dream lies in its being "不生不起亦非有" ("neither arisen, nor produced, nor existent").
The joys and sorrows, mountains and rivers, encounters with enemies, and the suffering of association with what is disliked — all that we experience within a dream, seen from the standpoint of awakening, has never truly "arisen" and possesses no substantial "existence."
But here there is an extremely crucial boundary: "梦虽不实非无假名" ("though the dream is not real, it is not without provisional names").
When the Buddha speaks of dreams, or of the world, he is not thereby acknowledging that the world possesses an independent, real substance; rather, he borrows concepts in order to "悦豫凡愚" (to delight and accommodate the cognitive habits of ordinary beings). The dream, together with the echo (響), the conjured illusion (幻), the heat-haze mirage (炎), and the shadow (影), all belong to that which is "但有假名，皆无实作" ("bearing only provisional names, all without real agentive action") — that is, names and concepts can be established (假名, prajñapti, provisional designation), but behind them there is no real entity or sovereign agent performing any actual operation (no real action).
2. The Fundamental Epistemological Architecture: The Faculties Are Like Illusions, the Sense-Realms Like Dreams
The scriptures establish an extremely rigorous epistemological orientation: "诸根如幻，境界如梦" ("the faculties are like illusions; the sense-realms are like dreams").
* 諸根如幻 (The faculties are like illusions): Our organs of perception — eye, ear, nose, tongue, body, mind (諸根, indriya, the sense faculties) — are like the false forms conjured by a magician; in themselves they contain no permanent, real perceiving subject. * 境界如梦 (The sense-realms are like dreams): The external world and objective environment we confront (境界, viṣaya, the sense-realms/objects), like scenes seen within a dream, appear vividly before us, yet are entirely projected by the mind-consciousness, delusive and unreal.
When "illusion-like" sense organs encounter "dream-like" external sense-realms, ordinary beings give rise to craving and aversion within that encounter, believing themselves to be interacting with a real world.
3. The Six Classical Dream Similes: Dissecting the Genesis of Karma
In order to fully explain how ordinary beings "create real karma within delusion," the *Mahāratnakūṭa Sūtra* sets out in great detail six classical models of the dream:
* Dreaming of seeing ghosts (夢中見鬼): One dreams of being bound and tormented by malevolent ghosts, generating immense terror; upon waking, the recollection still leaves one trembling. In the dream there was no ghost at all, yet the person suffers needlessly. * Dreaming of a corpse tied around the neck (夢見死屍繫頸): One dreams of a dead snake, a dead dog, or even a rotting human corpse wrapped around one's neck; upon waking one is seized with fright. In the dream there was after all no corpse, yet the person is needlessly exhausted. So too with ordinary beings: confronting the foul, rotten, delusive sense-realms of the world, they give rise to intense clinging and hatred, thereby creating the ten unwholesome deeds of hatred — the "身三、口四、意三" (three by body, four by speech, three by mind). * Dreaming of eating a bitter gourd (夢食苦瓠): One dreams of being driven by hunger and thirst and eating an extremely bitter gourd fruit; upon waking one recalls it. In the dream there was after all no food, yet the ordinary being is driven by delusive craving and creates karma through greed. * Dreaming of embracing a most excellent woman (夢抱最勝女): One dreams of embracing the most beautiful woman in the land; upon waking one savors the extremely subtle, delicate tactile sensation (細觸) of the dream, which in truth has no substance whatsoever. * Dreaming of a magician conjuring the five desires (夢見幻師作五欲): One dreams of a magician conjuring up manifold sense-realms of sensual delights — sights, sounds, and the rest — and of enjoying them together; upon waking one cannot forget the pleasure. In the dream there was neither magician nor the five desires, yet the ordinary being gives rise to deep attachment and defilement, creating karmas of attachment. * Dreaming of drinking wine and becoming drunk (夢飲酒昏醉): One dreams of drinking wine and falling into a stupor, dazed and crazed, unable to distinguish noble from base or good from evil; upon waking one recalls it. In the dream there was no wine at all, yet through ignorance and defiled craving the ordinary being creates all manner of unwholesome karma.
These six similes reveal with extraordinary depth: the root of karma-creation does not lie in whether the external objective object is real, but in whether the mind-consciousness mistakes the delusive appearance for the real (執妄為實, clinging to the false as true).
4. The Precise Mechanism of Saṃsāric Flowing-On: The Final Consciousness, Karmic Causes, and the Rebirth-Linking Consciousness
What most displays the depth of Mahāyāna doctrine is how Buddhism uses the dream to explain the process of death and rebirth.
While alive in the world, a person gives rise to greed, hatred, and delusion toward delusive sense-realms, creating the ten unwholesome deeds (十惡業, daśākuśala-karmāṇi) — three of body (killing, stealing, sexual misconduct), four of speech (false speech, divisive speech, harsh speech, idle chatter), and three of mind (greed, hatred, wrong view). Once these karmas are created, their external appearance immediately "perishes" (謝滅); they occupy no spatial location. What, then, carries the karmic force forward?
The scriptures construct this with great precision through the dream simile:
When life approaches its end and one is at the edge of death, the "最後識" (the final consciousness, pāścima-vijñāna) of the dying moment is about to be extinguished. At this point, the karmic forces accumulated over a lifetime re-emerge and manifest within the mind-consciousness — "如梦觉念梦中事" ("just as one who awakens from a dream recollects in thought the events of the dream").
At this moment:
1. The "最後識" (final consciousness) at the point of death takes the lead; 2. The "彼業因緣" (the karmic causes and conditions) previously created serve as its companion.
When these two unite, the seed of life, at the very instant it enters the "入死數" (the reckoning of death), simultaneously steps into the "入生數" (the reckoning of birth). In the very moment the preceding consciousness (the final consciousness) is extinguished, the consciousness of rebirth — the "生分識" (or 受生分識, the rebirth-linking consciousness, pratisandhi-vijñāna) — arises in its place. "前識既滅受生分識生，生分相續心種類不絕" ("the preceding consciousness having ceased, the rebirth-linking consciousness arises; the mind-stream continues without interruption"). And so life completes its transmigration across worlds within the six destinies (六道, ṣaḍ-gati — hell-beings, animals, gods, and so on).
In the most ultimate sense of the supreme truth: "無有一法從於今世至於後世而有生滅，無有作業者、亦無受報者" ("there is not a single dharma that passes from this life to the next with birth and death; there is no agent of karma, and no experiencer of retribution"). There is no fixed, unchanging soul transported from this life to the next, nor any substantial agent who acts or subject who receives retribution. Yet "見所作業及受果報皆不失壞" ("the deeds done and the fruits experienced are never lost") — the net of cause and effect is never disturbed. This is called "隨世俗故有，非第一義" ("it exists in accordance with the conventional, not in the supreme sense").
To understand both the delusiveness and the continuity of the dream is to simultaneously penetrate the 三解脫門 (trīṇi vimokṣa-mukhāni, the three gates of liberation) — the gate of emptiness (空解脫門, śūnyatā-vimokṣa-mukha), the gate of signlessness (無相解脫門, ānimitta-vimokṣa-mukha), and the gate of wishlessness (無願解脫門, apraṇihita-vimokṣa-mukha) — and thereby see emptiness directly and be freed from birth and death.
II. Tracing It Through Daily Life
Let us map the scriptures' rigorous "dream-simile mechanism" onto the everyday life scenarios of contemporary (當代) people, and see how we create karma and suffer within the "dream of reality."
Scenario: Late-Night Phone Scrolling and Being "Offended" on Social Media
* 諸根如幻，境界如梦 (The faculties are like illusions; the sense-realms are like dreams): Late at night, you lie in bed scrolling through social media and come across a caustic comment targeting a viewpoint you support — or even a direct verbal attack on you. The pixels on your phone screen, the code transmitted through network signals — these are the external "sense-realm" (like a dream); your eyes, brain neurons, and the reception of the mind-faculty are the perceptual organs, the "faculties" (like illusions). * 執妄為實，造作身口意業 (Clinging to the false as real, creating karma of body, speech, and mind): These online words are, in essence, nothing but electrical signals arranged on a screen — like shadows in a dream. But your mind-consciousness immediately treats this "dream-scene" as a substantive threat (like "dreaming of seeing ghosts" or "dreaming of a corpse tied around the neck"). You feel your heart race, your stomach clench; a fierce anger rises in your mind (the hatred of the three mental karmas). Immediately you transform into a "keyboard warrior," typing out an extremely sharp and spiteful retort and sending it (committing harsh speech, divisive speech, and idle chatter among the four verbal karmas), or even tossing and turning half the night, too angry to sleep (the body-karma suffers the consequence). * Where people most easily mis-map the metaphor (dispelling a misconception): Many will say: "But that's not right — the person on the other side of the network really exists, they really typed those words attacking me. How can this be called a dream?" The precise Buddhist mapping is this: whether the other person exists is a matter of conditioned phenomena; but the "substantialized image of the one who offended you" that you perceive, and the entire subject–object opposition structure of "my dignity has been dealt a devastating blow" — this is entirely a "dream-scene" self-constructed by your mind-consciousness through the stimulus of signals. As with "dreaming of a corpse tied around the neck": in the dream there is no corpse actually tied around your neck, yet the fatigue, fear, and anger your body produces are genuinely real. You are not harmed by those pixels; you are harmed by your own mind's "clinging to the false as real." * The daily manifestation of death and karma: When you switch off your phone and prepare to sleep, the screen goes dark (the preceding sense-realm perishes, like the "cessation of the preceding consciousness"), but the images of the argument and the angry emotions continue to replay in your mind ("manifesting in thought, like one who awakens from a dream and recollects the dream's events"). This mental state of anger and defensiveness (the karmic causes and conditions) directly determines the quality of the dreams you will have for the rest of the night (the rebirth-linking consciousness arising) — you may well dream of being chased, or of tearing at someone in a fight.
This is precisely the great wheel of saṃsāra reproduced at the micro-scale of daily life.
III. Why Contemporary People Need It
Contemporary life is wrapped in extreme digitalization, algorithmization, and symbolization. We are, in fact, more deeply immersed in the reconstruction of "dream" than the ancients ever were.
Contemporary brain science and cognitive neuroscience often propose similar hypotheses: the human brain is a "prediction processing engine" (Predictive Processing), and what we perceive as "reality" is merely a constrained "internal hallucination" (Controlled Hallucination) generated by the brain from sensory input and prior models. Modern technologies such as VR (virtual reality), generative AI, and personalized recommendation algorithms push "the sense-realms are like dreams" to its extreme — every day, algorithms customize a private "information cocoon" for you based on your preferences; inside it you see what you want to see (dreaming of embracing the most excellent woman), and rage at what you want to rage at (dreaming of seeing ghosts).
But the limitation of science lies here: brain science can tell us that "perception is a hallucination constructed by the brain," yet it cannot answer "how, within hallucination, one establishes moral responsibility and utterly liberates oneself from suffering." Science stops at describing the mechanism — and can even easily slide people into passive nihilism ("since everything is brain-constructed, nothing matters anyway").
The crowning wisdom of the Buddhist "dream simile" lies in this: it falls into neither the stubbornness of "clinging to substantial existence" nor the annihilation of "nihilism."
It tells contemporary people:
1. Disentangle from suffering: When you encounter workplace coercion (PUA), emotional trauma, or upheavals in life, try contemplating with "the sense-realms are like dreams." The fame, profit, gain, loss, and humiliation that press down on you to the point of breathlessness are, in their essence, "neither arisen, nor produced, nor existent". What you take to be a dead end is merely a corpse tied around your neck in a dream; as long as you do not cling, you can immediately disentangle yourself from the violence of the emotions. 2. Hold karma in reverence: Though "everything is like a dream," yet "though the dream is not real, it is not without provisional names"; the law of cause and effect (existing in accordance with the conventional) operates within the dream-system with not the slightest lapse. The unwholesome karma you create in the contemporary online world, the hatred you sow in daily life — these will all surface as the "karmic causes and conditions" at the moment of death, determining the psychological trajectory of your next life. Understanding the dream gives rise, on the contrary, to an extremely profound self-discipline and compassion.
IV. Common Misreadings and Clarifications
Misreading One: "Since Everything Is Like a Dream, Living Is Just Pointless Fussing; Karma, Good and Evil, Are All False Too — No Need to Keep Morality."
Clarification: This is the classic fall into the "annihilationist view" (斷滅見, uccheda-dṛṣṭi). In the scriptures, immediately after stating "there is no agent of karma, no experiencer of retribution," it invariably adds "見所作業及受果報皆不失壞" ("the deeds done and the fruits experienced are never lost").
The Buddha emphasized in particular that "no agent, no experiencer" is spoken from the perspective of emptiness in the supreme truth (第一義諦, paramārtha-satya, the absolute truth); while "karmic fruits are not lost" is said in accordance with the conventional truth (世俗諦, saṃvṛti-satya, the relative truth) of relative phenomena. If in a dream you are cut with a knife by someone, though upon waking you find no substantive injury, the pain and terror at the very moment of the dream were utterly real. As long as you have not completely severed clinging (not yet realized the three gates of liberation), you remain within the dream's net of cause and effect. Creating unwholesome karma invites the nightmare of the woeful destinies; creating wholesome karma invites the beautiful dream of the good destinies.
Misreading Two: "Buddhism Says 'Like a Dream' — Does That Mean This Real World Simply Does Not Exist at All, and It's Just a Trick of the Eyes?"
Clarification: One must not narrow "non-substantial" down to "absolute physical disappearance." What the scriptures say is "但有假名，皆無實作" ("bearing only provisional names, all without real agentive action").
The myriad things of the world exist as "phenomena arising from the union of causes and conditions" (provisionally designated), but within them there is no "independently self-existing, eternally unchanging entity (自性, svabhāva, self-nature)." Consider the images on a cinema screen: the light and shadow do exist (provisional name) — you can see people running and jumping — but there is no actual person running inside the screen (no real agentive action). When Buddhism says "like a dream," it teaches us not to cling to that "entity that fundamentally does not exist," not to deny the manifestation of conditioned phenomena.
Misreading Three: "A Dream Is Just What Psychology Calls the Release of the Unconscious, or the Random Firing of Brain Neurons."
Clarification: Contemporary psychology (such as Freud or Jung) treats dreams as the discharge or symbolism of repressed unconscious content; neuroscience treats dreams as by-products of electrical signals during memory consolidation. These scientific analogies are helpful for understanding, but they can in no way be equated with the Buddhist "dream simile."
Science studies "how the physical brain organ produces sleep-dreams," and its scope still treats the brain and the material world as real objects. The Buddhist "dream simile," by contrast, is an onto-soteriological framework (a framework of ontology and liberation): it directly defines our entire waking life as, on a larger dimension, the "great dream of ignorance" (無明大夢, avidyā-mahāsvapna). Only the complete extinguishing of greed, hatred, and delusion, and the severing of the ignorance that clings to the false as real, constitutes true "great awakening."