What This Concept Is Talking About
In Buddhist scriptures and treatises, "wheel"—輪 (cakra, "wheel")—is not a term that can be pinned down by a single definition. Like a flexible image rooted in the shared actions of "revolving" and "operating," it grows different branches across distinct discursive contexts. To understand "wheel," one must first let go of the hasty association of "wheel = 輪迴 (saṃsāra, "cyclic existence")." In the systematic analyses of the *Abhidharmakośabhāṣya* (T1558) and the *Illumination of the Thought* (*Dbu ma la 'jug pa'i dgongs pa rab tu gsal ba*), "wheel" carries at least five distinct levels of meaning that are mutually differentiated yet share the same core imagery.
The First Level: The Chariot Wheel as an Object—The Parts Are Not Equal to the Whole
"Wheel" in its most unpretentious sense refers to the chariot wheel. However, the *Illumination of the Thought* uses it to make an extremely subtle philosophical observation. The treatise notes that some assert that when parts such as wheels, axles, and linchpins are assembled into a "chariot," a "new shape" is produced—a specific shape belonging to the whole chariot that differs from the original shapes of its individual parts. But the author counters: if such a new shape were genuinely produced, it ought to be visible to the eyes. Yet when you gaze directly at a chariot, what you see remains merely the roundness of the wheels, the length of the axle, and the squareness of the linchpins; no additional "chariot shape" appears.
This argument aims not to assert that "the chariot does not exist," but rather that: the chariot is merely an aggregation of parts and possesses no independent entity apart from those parts. Here, the wheel plays the role of one among the "many parts of a chariot." It serves as a reminder that when we speak of a "chariot," we easily and unconsciously treat it as an entity independent of wheels, axles, and linchpins—as if an invisible "chariot body" were supporting it from behind. Yet the Buddhist observation is that apart from the parts such as wheels, axles, and linchpins and their composite relationships, no separate "chariot" hides behind them.
The Second Level: Metaphor of the Potter's Wheel—Turning Without Continuous Force
The *Illumination of the Thought* further employs the metaphor of a potter's wheel. After a powerful potter exerts effort for a long time to spin the wheel, even if no further force is applied at the present moment, the potter's wheel continues to spin due to momentum and becomes the cause for fashioning vessels such as pots.
This image is used as a metaphor for the deeds of the Buddha. When the Buddha abides in the 法性身 (dharmatākāya, "dharma-nature body"), he experiences no deliberate exertion or sense of effortful "I am liberating sentient beings" in the present moment. Yet, owing to the roots of goodness and vows of 有情 (sattva, "sentient beings") themselves, the Buddha's deeds remain "ever-turning and unfathomable"—like the potter's wheel that requires no further force yet continues to operate without pause.
What this level of "wheel" highlights is not a static shape, but dynamic continuity: a power that does not rely on present exertion yet continues to produce effects.
The Third Level: "A Wheel Without Beginning" in Transmigration—The Most Essential Wheel
The *Abhidharmakośabhāṣya*'s most central usage of "wheel" is as a metaphor for the cycle of birth and death. The treatise first establishes "no 我 (ātman, "self"), only aggregates": sentient beings possess no permanent, singular, governing "self"; what exists is merely the continuum of the 五蘊 (pañcaskandha, "five aggregates")—色 (rūpa, "form"), 受 (vedanā, "sensation"), 想 (saṃjñā, "perception"), 行 (saṃskāra, "mental formations"), and 識 (vijñāna, "consciousness"). This continuum of aggregates is driven by 煩惱 (kleśa, "affliction") and 業 (karma, "action").
The concrete process is as follows: the continuum of aggregates in this life enters the womb via the 中有 (antarābhava, "intermediate state") to unfold the next life; in that new life, afflictions prompt the creation of karma, which in turn leads to wandering into future realms after death. Moving back and forth like this, like a lamp flame where the preceding flame ignites the succeeding flame, the continuum persists without interruption, turning and proceeding further.
Hence, the treatise summarizes this in four characters: "a wheel without beginning".
These four characters carry immense weight. "Wheel" does not imply that there is a concrete object revolving like a chariot wheel; rather, it signifies that afflictions, karma, and 苦 (duḥkha, "suffering") constitute a revolving structure—afflictions propel the creation of karma, karma brings forth painful results, and painful sensations trigger new afflictions—cycling endlessly. "Without beginning" means that one cannot point to a first starting point for this revolving motion. It has no first cause and did not "begin" turning at a specific moment in time; it has simply always been turning like this.
The Fourth Level: The Precious Wheel of the Wheel-Turning King—The Pinnacle of Mundane Merit
In discussing the 轉輪王 (cakravartin, "wheel-turning king"), the *Abhidharmakośabhāṣya* employs another dimension of meaning for "wheel": the four precious wheels of gold, silver, copper, and iron. These are wheel-shaped sacred objects possessed by a monarch, categorized according to the rank of the wheel-turning king: a gold-wheel king governs four continents, a silver-wheel king governs three continents, a copper-wheel king governs two continents, and an iron-wheel king governs one continent.
It is worth noting that there are also gradations in how the precious wheel subdues others: wherever a gold-wheel king goes, other territories naturally submit; a silver-wheel king must travel there himself; a copper-wheel king must use majesty and force to bring others to submission; and an iron-wheel king must undergo armed conflict to achieve victory. Yet regardless of the type, it is said that they "conquer without harm"—without resorting to killing.
The treatise explicitly notes that the wheel and virtues of a wheel-turning king are not identical to those of a Buddha. The wheel-turning king is a symbol of worldly rulership, and his wheel is an emblem of power and governance; the Buddha's "wheel" is entirely different. This is a crucial contrast: no matter how sublime a mundane wheel may be, it remains within the realm of transmigration; only the supramundane wheel is the path to transcending transmigration.
The Fifth Level: The Brahma-Wheel and the Dharma-Wheel—The Noble Path Capable of Turning Toward Renunciation
The usage of "wheel" at the level of the noble path bears two names: the 梵輪 (brahmacakra, "brahma-wheel") and the 法輪 (dharmacakra, "wheel of the Dharma").
The brahma-wheel is an alternate name for 沙門性 (śrāmaṇya, "ascetichood"). Why is it called "brahma"? Because it is "turned by a true Brahma"—spun by a genuine pure practitioner. The treatise explains that the Buddha accords with supreme brahma-virtue, so the Bhagavan alone deserves the name "Brahma." In other words, the source of the noble path teachings expounded by the Buddha is pure and untainted, hence named the brahma-wheel.
The wheel of the Dharma, on the other hand, involves a more detailed discussion. The treatise first states that the 見道 (darśanamārga, "path of seeing") possesses five aspects similar to a mundane wheel, and is thus named the wheel of the Dharma:
1. Swift motion—The path of seeing is swift and fierce, like a rapidly spinning wheel; 2. Relinquishing and taking up—The path of seeing relinquishes (abandons afflictions) and takes up (realizes truth), just as a wheel exits and enters; 3. Subduing the unvanquished—It can subdue afflictions that have not yet been subdued; 4. Suppressing the already subdued—It can press down upon afflictions already subdued, preventing them from arising again; 5. Turning above and below—The path of seeing can operate across upper realms (form realm, formless realm) and lower realms (desire realm).
Venerable Ghoṣaka, however, matches the structural components of a wheel to the 八支聖道 (āryāṣṭāṅgamārga, "Noble Eightfold Path"): 正見 (samyagdṛṣṭi, "right view"), 正思惟 (samyaksakalpa, "right resolve"), 正勤 (samyagvyāyāma, "right effort"), and 正念 (samyaksmṛti, "right mindfulness") correspond to the spokes; 正語 (samyagvāc, "right speech"), 正業 (samyakkarmānta, "right action"), and 正命 (samyagājīva, "right livelihood") correspond to the hub; and 正定 (samyaksamādhi, "right concentration") corresponds to the rim. The spokes radiate outward from the center; the hub is the central hole through which the axle passes; the rim is the outer circle that gathers the spokes together. As a unified whole, the Noble Eightfold Path resembles a structurally complete wheel—views, resolve, effort, and mindfulness are the spokes carrying the power to propel forward; speech, action, and livelihood are the hub serving as the pivot of establishment; and concentration is the rim holding everything together.
The treatise also presents an important debate: What is the exact scope of the wheel of the Dharma? The Vaibhāṣikas hold that the wheel of the Dharma is limited strictly to the path of seeing—because only the single moment of the path of seeing possesses the five characteristics such as "swiftness." However, the author disagrees: if the 三轉十二行相 (trivartadvādaśākāra, "three turnings and twelve aspects") do not belong exclusively to the path of seeing, then the name "wheel of the Dharma" should not be established solely upon the path of seeing. Thus, a broader definition is proposed: "all teachings characterized by the three turnings and twelve aspects" that traverse the 四聖諦 (catvāry āryasatyāni, "Four Noble Truths") are named the wheel of the Dharma. Furthermore, the meaning of "turning" is that this teaching enters into the continuum of another person, causing them to understand its meaning—not that it turns privately by oneself, but that it causes the Dharma to enter another's mind and resolve their doubts.
At the end of the treatise, it is stated even more broadly: all 聖道 (āryamārga, "noble paths") can be named the wheel of the Dharma, because noble paths turn within the minds and bodies of trainable sentient beings. The focus of the wheel of the Dharma lies not in the static shape of a "wheel," but in the dynamic movement of "turning"—the Dharma must be set in motion within the lives of sentient beings to become a true wheel of the Dharma.
Summary: The Inner Interconnection of the Five Levels of Meaning
When these five levels are viewed together, one discovers that they share a single core image: ceaseless revolution. Only when a chariot wheel turns can the chariot move forward; only when a potter's wheel turns can pottery take shape; only when the wheel of birth and death turns do sentient beings transmigrate through the realms; only when the wheel of the Dharma turns can sentient beings gain liberation from transmigration; and when the wheel-turning king's precious wheel turns, it symbolizes the overarching reach of royal authority.
Yet there is a fundamental tension among these five levels: the wheel of birth and death is meant to be "stopped," whereas the wheel of the Dharma is meant to be "turned." Both are wheels, yet one is the disease and the other is the medicine. This is precisely the most profound location of the concept of "wheel" within the overall framework of Buddhism—transmigration and 還滅 (nirodha, "cessation"), rely on the exact same imagery of revolution, yet their directions are entirely opposite.
Practical Observations in Daily Life
Let us bring "wheel" into the daily routines of contemporary people, walking through it step by step.
Scenario 1: "A Wheel Without Beginning" on the Subway
At eight in the morning, you are squeezed into a subway car, scrolling through your phone. The newsfeed is like a wheel that never stops turning: as soon as one short video ends, the next plays automatically; click on one trending topic, and related recommendations immediately follow. You didn't deliberately "choose" what to watch, yet your fingers move, your eyes move, and your attention is continuously drawn along.
Now let us examine this process through the lens of "a wheel without beginning" from the *Abhidharmakośabhāṣya*. What drives your scrolling behavior? It is driven jointly by afflictions (the desire to see something, fear of missing out, a sense of boredom) and karma (habitual touching, muscle memory of swiping). Every new piece of information that enters your visual consciousness triggers sensation (pleasure, curiosity, annoyance), sensation triggers perception (identifying what it is), perception propels mental formations (swiping again, watching one more), and mental formations create new karma (generating new recommendation data). The five aggregates—form (lights and shadows on the screen), sensation (emotional ups and downs), perception (content identification), mental formations (the volition to swipe), and consciousness (present moment awareness)—thus cycle endlessly in continuum.
Does this process have a starting point? You cannot point to "when I began scrolling on my phone like this"—it did not start today, it did not start this month, nor did it even start in this lifetime. It is a revolution "without beginning": for as long as you have had memory, attention has been pulled along like this; you have merely changed the instrument pulling it, moving from television to computer to smartphone.
Scenario 2: "Continuity of Affliction and Karma" during Overtime
Let us walk through another scenario. At nine in the evening, you are still in the office, staring at a slide deck that never seems finished. Why are you here? Because you fear being laid off (affliction: fear), so you choose to stay and work overtime (karma: action). Working overtime leaves you exhausted (suffering), exhaustion reduces your efficiency, reduced efficiency makes you even more terrified of being laid off (new affliction), and so you dare not leave even more (new karma).
Is this a "wheel"? Yes. Affliction propels karma, karma induces suffering (result), and suffering nourishes new affliction. This structure is isomorphic to the *Abhidharmakośabhāṣya*'s statement that "due to the force of affliction and karma, the aggregates continue, proceeding toward remaining realms"—except that "remaining realms" here means tomorrow's work, the next project, the next round of performance evaluations.
Scenario 3: "The Chariot Wheel and its Parts" in Interpersonal Relationships
Now let us apply the first level of meaning of "wheel"—that the chariot wheel is not equal to the chariot—to examine an intimate relationship. Have you ever had this experience: you and your partner quarrel, and by the end, what you are arguing about is no longer a concrete matter (who should wash the dishes, who forgot an anniversary), but a vague, massive entity—"that's just the kind of person you are." You seem to see an "entity" in your partner: a lazy person, a selfish person, an inconsiderate person.
Yet the observation of the chariot in the *Illumination of the Thought* possesses great force here: apart from concrete actions (not washing dishes today), concrete words (that hurtful sentence just now), and concrete expressions (that impatient look)—these "parts"—does an independent, permanent "lazy you" truly exist? If you stare directly at them, can you see "laziness" itself? Or do you merely see one concrete, changeable behavior after another?
A "chariot" is an aggregation of parts, not an independent existence outside its parts. Relationships are the same. When you view the other person as an "entity"—a fixed, unchanging essence—you cannot change anything; when you view the other person as "many parts"—concrete actions, words, and reactions—change becomes possible. This does not mean ignoring problems, but rather that problems are always concrete and adjustable, never a monolithic, unshakeable essence.
Scenario 4: The "Potter's Wheel" in Education
Finally, let us examine the fourth level's "potter's wheel"—turning without continuous force. Imagine a teacher. A good teacher does not need to exert force every single second in the classroom—after preparing the lesson and establishing order and atmosphere, even if there is a moment when they are not speaking or enforcing discipline, the classroom continues to operate in a healthy rhythm. Student discussions proceed, and learning momentum persists.
This is the state of the potter's wheel: after sustained effort over a long time, one need not exert force at every moment, yet affairs continue to reach completion. So it is with the deeds of the Buddha, so it is with good education, and so it is even with good parenting—you spend the first decade establishing a child's habits and values, and thereafter you do not need to watch over them every moment; those internalized elements will turn on their own. Yet take note: the prerequisite for a potter's wheel to "turn without applying force" is prior, long-term exertion. Without the work done beforehand, there is no subsequent ease. If the potter does not exert force to spin the wheel first, it will not turn by itself.
Where People Are Most Prone to Mismapping
- "Saṃsāra" is not "soul transmigration." This is the single greatest misunderstanding. The *Abhidharmakośabhāṣya* explicitly states "no self, only aggregates"—there is no permanent soul moving from a past life into the present life. What continues is the flow of the aggregates, like a lamp flame—the preceding flame is not the succeeding flame, yet the succeeding flame arises because of the preceding flame. It is not the same flame traveling, but the flame being passed along. - The "wheel of the Dharma" is not a physically existing wheel. No temple enshrines a physical "wheel" called the "Dharma Wheel"—the wheel of the Dharma is a metaphor for the noble path; it is the process of the "Dharma" turning within the hearts and minds of sentient beings. The phrase "turning the wheel of the Dharma" never refers to turning a physical object, but to imparting the meaning of the Dharma into the continuum of sentient beings so that they comprehend it and give rise to liberating wisdom. - The "precious wheel of a wheel-turning king" has nothing to do with "saṃsāra." The gold, silver, copper, and iron wheels are symbols of mundane dominion; they are political, not religious. Confusing the two leads to misinterpreting the "cakravartin holy king" as a "king of saṃsāra," which is completely incorrect—a wheel-turning king is a holy monarch who rules the world, not a deity who governs life and death.
Why Contemporary People Need It
1. Needing "A Wheel Without Beginning" to Shatter the Fixation on a "Starting Point"
Contemporary people harbor a powerful myth: everything must have a traceable starting point. Why am I anxious? Because of my family of origin. Why do I lack security? Because of a failed relationship. Why can't I quit my phone? Because short videos are too tempting. These explanations all make sense, yet they implicitly carry an assumption: if the starting point can be found, the wheel can be severed from there.
Yet the insight offered by "a wheel without beginning" is that you cannot find that starting point. This is not due to a lack of information, but because revolution intrinsically lacks a beginning. This is not a message of despair, but rather one of liberation—you do not need to find the starting point in order to stop the wheel's revolution. You do not need to thoroughly analyze your family of origin to stop anxiety, nor do you need to pinpoint the very first time you scrolled through your phone to quit your phone. You can intervene at any point—now, at this very moment, directly altering the connection between affliction and karma. When affliction arises, see it and do not turn with it; when habitual inertia is about to ignite, pause for a beat and do not follow it. The wheel does not need to be stopped from its starting point; it can be halted at any single instant.
2. Needing the "Potter's Wheel" to Recalibrate the Understanding of "Effort"
Contemporary people hold two extreme attitudes toward effort: one is "frenzied" effort—believing that as long as one exerts enough fierce, prolonged force, anything can be achieved; the other is "lying flat" resignation—since effort doesn't guarantee results, it's better not to try.
The metaphor of the "potter's wheel" offers a third possibility: exert force first, and then one need not exert force at every moment. True effort is not a state of continuous tension, but a phased investment—exerting full force in the early stage, and letting inertia and structure take over in the later stage. This is not opportunism, but wisdom. Just like learning a language, a large amount of input and practice in the early stage is necessary; but once internalized to a certain degree, you do not need to memorize vocabulary every day to maintain fluency—because the language has already begun "turning" inside you.
3. Needing the "Wheel of the Dharma" to Re-Understand "Transmission"
In an era of information explosion, "transmission" has been reduced to "dissemination"—press a button, and content goes out. "Retweeting," "sharing," and "spreading" involve merely the replication of information, not the transformation of life.
Yet the "turning" of the wheel of the Dharma carries an extremely strict definition: the Dharma has entered into the continuum of another person, causing them to comprehend its meaning. Without "comprehending meaning," there is no "turning." You forward an article, but if that article enters no one's heart and is understood by no one, that is not turning the wheel of the Dharma—it is merely forwarding.
This standard serves as an excellent reminder for modern people: genuine communication is not the delivery of a message, but the generation of meaning. When you communicate with your partner, did your words "turn"? Did they understand your meaning? Did a change arise in their heart? If not, no matter how much you say, you are merely spinning in place—not "turning the wheel of the Dharma."
4. Needing the Observation of "Parts and Whole" to Counter Essentialist Thinking
Contemporary thinking has a strong tendency toward "essentialization": categorizing people as "good people" or "bad people," events as "success" or "failure," and defining oneself as an "anxious person," a "socially anxious person," or a "procrastinator." These labels are like an invisible "chariot"—we assume there is a fixed entity behind the label, and thus we are held hostage by it.
The observation of "the many parts of a chariot, such as wheels, axles, and linchpins" liberates us from essentialist thinking: there is no 'procrastinating person,' only 'procrastinating behavior'; there is no 'socially anxious person,' only 'reactions of feeling tense in social settings.' Behaviors can be changed and reactions can be adjusted, but an "essence" causes despair—because an essence appears unshakeable. The Buddhist "observation of parts" is no word game; it directly determines whether you believe you have the possibility to change.
Common Misreadings and Clarifications
Misreading 1: "Wheel" Is Simply "Saṃsāra"
This is the most common misreading. In fact, in the *Abhidharmakośabhāṣya*, the "wheel" of birth and death is only one of five layers of meaning for "wheel." The chariot wheel, potter's wheel, precious wheel, brahma-wheel, and wheel of the Dharma each have their specific referents and cannot be generalized. Narrowing "wheel" down to "saṃsāra" flattens a rich concept into a single label.
Misreading 2: "Saṃsāra" Is a Soul Transmigrating
This is the most serious misunderstanding of "a wheel without beginning." The *Abhidharmakośabhāṣya* explicitly states "no self, only aggregates"—there is no permanent "self" revolving. What continues is the flow of the five aggregates, like a continuous lamp flame or a rushing river—the water of the previous second is not the water of the next second, yet the water of the next second exists because of the water of the previous second. There is no soul moving house, only the transmission of cause and effect.
Misreading 3: "Turning the Wheel of the Dharma" Is a Ritual or Ritual Implement
"Turning the wheel of the Dharma" is not spinning a physical Dharma wheel, nor is it a religious ritual. The definition of "turning" is: this teaching enters into the continuum of another person, causing them to comprehend its meaning. The reason the wheel of the Dharma is a wheel is that it "turns within the minds and bodies of trainable sentient beings"—only when it operates within the heart of the listener is it a genuine wheel of the Dharma.
Misreading 4: The "Wheel of the Dharma" Is Restricted Strictly to the Path of Seeing
This was a matter of debate within the *Abhidharmakośabhāṣya*. The Vaibhāṣikas held that the wheel of the Dharma is limited strictly to the path of seeing, but the author held that defining the wheel of the Dharma as "all teachings characterized by the three turnings and twelve aspects" is more reasonable, and broadly asserted that all noble paths can be named the wheel of the Dharma. Therefore, the scope of the wheel of the Dharma is open—all noble paths capable of causing sentient beings to comprehend meaning and turning within their bodies are wheels of the Dharma.
Misreading 5: Conflating the Wheel-Turning King's Precious Wheel with the Buddhist Wheel of the Dharma
The wheel-turning king's precious wheel is a symbol of mundane governance, a monarch's wheel; the wheel of the Dharma is a supramundane teaching of liberation. Although both use the word "wheel," one is an emblem of power, while the other is a pathway to liberation; one remains within the scope of transmigration, while the other is a vessel for transcending transmigration. This is precisely why the *Abhidharmakośabhāṣya* explicitly points out that the wheels and virtues of a wheel-turning king are not equal to those of a Buddha.
The character "wheel" in a Buddhist context resembles a multi-faceted crystal, each facet reflecting a different light. It is the part of a chariot, reminding us that the whole is merely an aggregation of parts; it is the potter's wheel, inspiring our ease after effort; it is the metaphor for birth and death, revealing the beginningless cycle of affliction, karma, and suffering; it is the wheel-turning king's precious wheel, marking the pinnacle of mundane merit; it is the brahma-wheel and the wheel of the Dharma, pointing toward the path of liberation and the manner of its transmission.
Yet all these facets revolve around the exact same core imagery: revolution. Revolution can be bondage—the wheel of birth and death causes sentient beings to transmigrate without end; revolution can also be liberation—the turning of the wheel of the Dharma causes sentient beings to awaken from transmigration. The exact same action, in opposite directions, yields utterly different results.
The key lies not in the wheel, but in which direction it turns.