Saṃsāra (Buddhism)
Saṃsāra, a term shared by Sanskrit and Pali, names the beginningless cycle of birth, ordinary existence and dying again in Buddhist thought. The wheel turns without any starting point, kept in motion by craving and by ignorance, or avidyā. Rebirth carries a being into one of six realms, and the texts describe the whole arrangement as suffering, or dukkha. Only nirvāṇa stops the turning: the extinguishing of desire alongside real insight into impermanence and the absence of any fixed self.
What keeps a being locked into this wheel life after life? Who is reborn if there is no permanent self to carry forward? And what does the tradition actually say happens at the moment the cycle ends?
Passages from the Samyutta Nikaya describe samsara as fueled by ignorance and by craving, with no beginning point at all. The unending passage across the six realms, called gati, or "paths" in Sanskrit, follows no particular direction or purpose. It simply repeats, life after life, shaped by consequence rather than intention.
Dukkha, suffering, sits at the essence of samsara, tying the whole cycle to the Four Noble Truths at the core of Buddhist teaching. Every rebirth is temporary. A being is born, dies, and is reborn elsewhere according to its own karma.
Ignorance about impermanence, anityā, and about the absence of a fixed self, anātman, is what leads to craving in the first place. This particular pairing of blindness and desire is what the tradition points to as the engine behind the whole cycle.
Outside of Buddhism entirely, similar ideas about cyclical existence go back to around 800 BCE, long before the tradition took its Buddhist form.
Early Buddhist texts suggest that the Buddha faced a real difficulty: explaining what is reborn and how rebirth happens, once he had introduced the idea that there is "no self." Buddhism's position that no permanently unchanging entity survives the cycle, called anātman, is what separates it from Hindu and Jain accounts of saṃsāra.
The fifth-century Pali scholar-monk Buddhaghosa addressed the puzzle directly. He argued that lacking a self does not mean lacking continuity, comparing rebirth to a flame passed from one candle to another. Buddhaghosa called this mechanism "rebirth-linking consciousness," or patisandhi.
The Early Buddhist Schools split over whether an intermediate state, antarābhava, exists at all between lives. Theravada Buddhists, on the more conservative side, hold that rebirth happens immediately, while Mahāyāna schools generally accept an intermediate stretch of up to forty-nine days before a being is reborn.
The third-century Mahayanist scholar-monk Nagarjuna offered a further twist through his framework of the Two Truths. At the level of ultimate truth, he argued, saṃsāra and nirvāṇa are identical, a claim that reframes everything the six realms seem to promise or threaten.
Buddhist cosmology typically counts six realms of rebirth: gods, demi-gods, humans, animals, hungry ghosts and hells. Earlier Buddhist texts describe only five, folding the demi-god realm into the god realm as a single category. The six realms split into three higher, fortunate realms, gods, humans and demi-gods, and three lower, unfortunate ones, animals, hungry ghosts and hell beings; East Asian literature further organizes them into thirty-one distinct levels.
The god realm, or deva, ranks as the most pleasant of the six and splits into many separate planes of existence. Wholesome karma is what earns a being this rebirth, and a deva has no need to work, free to enjoy every pleasure found on earth. Those same pleasures work against the deva, though: attachment, called Upādāna, crowds out spiritual pursuit, so no deva reaches nirvana from this realm. The deva realm even absorbs figures from Hindu tradition, gods such as Indra and Brahma, along with cosmological ideas like Mount Meru.
A rebirth into the human realm brings vastly different physical traits and moral character, shaped entirely by a being's past karma. Buddhism treats this realm as fortunate above the others precisely because it offers a real chance to reach nirvana and step off the wheel.
Demi-gods, or asuras, make up the third realm, marked by anger and by certain supernatural powers. They fight with the gods directly, or trouble humans through illness and natural disaster, accumulating karma of their own before being reborn again.
The animal realm, tiryag, comes close to a hellish existence in Buddhist description. Animals are driven by impulse and instinct, prey on one another, and suffer as a result; some texts even place plants in this realm, crediting them with a primitive form of consciousness.
Hungry ghosts, or pretas, are born from karma rooted in excessive craving and attachment, with no body of their own, invisible and made only of what the texts call "subtle matter." They are described as endlessly thirsty and hungry, with mouths too small and stomachs too large to ever be satisfied. Buddhist communities across Asia try to feed them anyway, setting out food and drink on ritual days each year. According to McClelland, this is the mildest of the three evil realms, though Yangsi Rinpoche describes their suffering as more intense than that of animals. Once their negative karma runs out, these beings are reborn elsewhere.
Hell, naraka, awaits beings whose karma includes theft, lying or adultery, among other evils. The texts lay out numerous distinct hellish regions, including eight hot hells and eight cold hells, plus realms where beings are eaten alive, beaten or tortured to match their unwholesome deeds. Once that karma is exhausted, these beings die out of hell and rise into higher realms; unlike the Christian hell, the stay here is temporary rather than a final damnation.
Tibetan Buddhism places a buddha in each of the six realms, a set known as the Six Sages: Indraśakra among the gods, Vemacitra among the petty gods, Śākyamuni in the human realm, Sthīrasiṃha among animals, Jvālamukha among hungry ghosts, and Yāma Dharmarāja presiding over the hot hells.
Karma, in the literal sense of "action," comes from an intentional physical or mental act that produces a future consequence. Whether a deed counts as wholesome or unwholesome depends on cetanā, the intention underneath it. A person's present circumstances trace back to actions from previous lives, while the next rebirth depends on actions taken in this life and the ones before it.
According to the scholar Frauwallner, the Buddhist texts themselves show a shift over time in how they explain the root cause of samsara. Craving was the original candidate, something the practice of dhyāna, or meditative absorption, was thought to still. Vetter identifies that resulting calm of mind as the liberation the earliest tradition was actually seeking.
Later Buddhist tradition shifted the blame to ignorance, avidyā, instead of craving alone. Avidya means misconceiving reality, a confusion that leads to grasping, clinging and repeated rebirth. Paul Williams describes it as "the not-knowingness of things as they truly are, or of oneself as one really is," something overcome only through insight.
In the later tradition, "liberating insight" came to carry the same weight as the practice of dhyana itself. Vetter and Bronkhorst trace this shift to pressure from other religious groups in India, who insisted that liberating insight was necessary for moksha, liberation from rebirth.
The term prajna originally named this liberating insight. In suttas where the four jhanas built up to a final breakthrough, prajna was later replaced by the four truths themselves. The four truths were in turn superseded by pratityasamutpada, dependent origination, and later still, in the Hinayana schools, by the doctrine that no substantial self or person exists at all.
Schmithausen catalogs still other descriptions of this liberating insight scattered through the Buddhist canon, including the idea "that the five Skandhas are impermanent, disagreeable, and neither the Self nor belonging to oneself," and the realization of those same Skandhas as "empty, vain and without any pith or substance." Every one of these versions points toward the same destination the tradition calls mokṣa, liberation.
Liberation, mokṣa, is what ends saṃsāra according to Buddhist teaching. The earliest tradition identified it directly with nirvana. Later Buddhism tied liberation instead to insight, especially the recognition and acceptance of non-self, meaning no longer perceiving any soul or self anywhere. That equation of liberation with non-self runs throughout the earliest Buddhist texts.
Some Buddhist texts describe rebirth as the transfer of consciousness, vijiñāna in Sanskrit and vinnana in Pali, from one life into the next. Liberation is reached, in this account, the moment that consciousness ceases altogether.
A passage numbered S III, 53 ties the destruction of consciousness to what it calls the "destruction and cessation of" karmic activities, or anabhisankhara. Those karmic activities are what the tradition treats as necessary for cyclic existence to keep perpetuating itself at all.
Good deeds, donations to monks and various rituals are what most Buddhists actually pursue in daily practice, rather than nirvana itself. Even though liberation from saṃsāra remains the ultimate spiritual goal, most aim instead for a better rebirth, accumulating merit along the way.
Impermanence sits at the center of this entire picture: every living thing, every cause, every condition and situation eventually disappears once it has arisen. Buddhist teaching describes this happening "moment to moment," which is exactly why there is no fixed self to recognize. Because everything, without exception, is decaying, neither permanent happiness nor a permanent self can exist inside samsara.
Anatta names this Buddhist idea of non-self. Winston L. King, writing in the journal Philosophy East and West and identified as a writer from the University of Hawai'i Press, points to two integral parts of it: first, that Anatta can be "experienced and not just described."
Obtaining awareness of Anatta, King writes, brings "freedom from the push-pull of his own appetites, passions, ambitions, and fixations and from the external world's domination in general, that is, the conquest of greed, hatred, and delusion." That same push-pull of ordinary existence is what produces dukkha in the first place. The open question left standing is what these drives look like once they are mapped onto the six realms themselves, rather than treated as one uniform experience of suffering.
Chögyam Trungpa described the six realms as referring to both "psychological states of mind and physical cosmological realms" at once. Gethin's reading turns Buddhist cosmology into a map of every possible psychological experience a person can have, arguing that karma, and therefore rebirth, is shaped directly by a person's state of mind in their current life.
Paul Williams accepts Gethin's "principle of the equivalence of cosmology and psychology" only partway. Williams stresses that Gethin never claims Buddhist cosmology is solely about states of mind; the realms, Williams insists, are real realms of rebirth. Otherwise, he notes, rebirth would always land a being back in the human realm, or would not happen at all, and that is not traditional Buddhism.
David McMahan takes a harder line, concluding that reading ancient Buddhist cosmology through modern psychology amounts to "detraditionalization and demythologization," a modernistic reconstruction he sees repeated across every religion.
The sixth-century Chinese monk Zhiyi, whose writings founded the Tiantai school in China, wrote of "the trichiliocosm in a single instant of thought," yíniàn sānqiān, the claim that the vastness of all space fits inside one single thought. The Record of Linji, an anthology of the ninth-century monk Linji Yixuan's teachings, makes a similar claim: that the Three Realms themselves originate with the mind.
Daniel Goleman renders saṃsāra as conditioned existence, and Jeffrey Hopkins as cyclic existence. Phillip Moffitt calls it the cycle of clinging and taking birth in one desire after another. Alexander Berzin settles on uncontrollably recurring rebirth, while Mingyur Rinpoche simply calls it the wheel of suffering.
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Common questions
What is saṃsāra in Buddhism?
Saṃsāra in Buddhism is the beginningless cycle of repeated birth, mundane existence and dying again, considered to be suffering, or dukkha. It is perpetuated by desire and ignorance, avidyā, along with the karma and sensuousness that result.
How many realms of rebirth does saṃsāra include in Buddhism?
Buddhist cosmology typically identifies six realms of rebirth in saṃsāra: gods, demi-gods, humans, animals, hungry ghosts and hells. Earlier Buddhist texts describe five realms instead, combining the god and demi-god realms into one.
How does saṃsāra end according to Buddhism?
Saṃsāra ends when a being attains nirvāṇa, or more broadly liberation, mokṣa, the extinction of desire paired with true insight into impermanence and non-self. Some texts describe this as the point when the transfer of consciousness from one life to the next finally ceases.
What causes the cycle of saṃsāra in Buddhism?
Saṃsāra is perpetuated by karma, which is caused by craving and ignorance, avidyā. The tradition's explanation shifted over time: earlier texts treated craving as the root cause, stilled through dhyāna, while later tradition identified ignorance as the deeper root.
How did Buddhism explain rebirth without a permanent self in saṃsāra?
Early Buddhist texts suggest the Buddha faced difficulty explaining what is reborn given the doctrine of no-self, anātman. The fifth-century scholar-monk Buddhaghosa compared rebirth to a flame passed from one candle to another, calling the mechanism rebirth-linking consciousness, or patisandhi.
What are alternative English translations of saṃsāra?
Alternative translations of saṃsāra include conditioned existence (Daniel Goleman), cyclic existence (Jeffrey Hopkins), uncontrollably recurring rebirth (Alexander Berzin) and wheel of suffering (Mingyur Rinpoche).
All sources
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