聲相論

When Sound Is Like a Pre-Recorded Track—Why Buddhism Refutes It

What This Concept Is Talking About

Let us clarify one thing at the outset: 聲相論 (śabdalakṣaṇaśāstra, "theory of sound-marks") is not a Buddhist doctrine. Rather, it is a heterodox doctrine (外道, *tīrthika*) recorded and systematically refuted by Buddhism in the treatises of the 瑜伽部 (Yogācāra, "Yogācāra school"). Its core proposition consists of a single sentence, but the weight of this sentence is immense, sending tremors through the entire foundation of linguistic philosophy and metaphysics:

「聲相常住，無生無滅。」——聲之相狀本來就已存在，沒有生起，也沒有壞滅；說話、發音、宣吐這些動作，並不是聲相的「生因」，只是讓本來就在那裡的聲相顯了出來。 *“The mark of sound is eternally abiding, without origination or cessation.” — The characteristics of sound inherently exist from the beginning, neither coming into being nor perishing. Actions such as speaking, vocalizing, and uttering are not the "generative causes" (janaka-hetu) of the sound-mark; they merely cause the sound-mark that is already present to become manifest.*

The *Yogācārabhūmi-śāstra* (《瑜伽師地論》, T1579) categorizes this alongside 因中有果論 (satkāryavāda, "theory of the effect pre-existing in the cause") under the overarching designation of 從緣顯了論 (pratītya-vyañjanavāda, "theory of manifestation through conditions"—meaning that things manifest through diverse conditions rather than arising from them). The *Āryasāsanaprakaraṇa-śāstra* (《顯揚聖教論》, T1602) employs the same classification while adding a crucial detail: "repeated utterance" (數宣吐)—the mark of sound does not manifest from a single vocalization; rather, it requires repeated speaking and vocalizing to achieve 顯了 (vyañjana, "manifestation"). Thus, in the eyes of the heterodox sound-theorists (Śābdika), vocalization is like a flashlight: it does not create the objects in the dark; it merely illuminates what was already there.

This may sound like a strange, isolated hypothesis about sound. Yet when its full structure is laid bare, one discovers that it is a ubiquitous and seductive conceptual archetype:

| Terms in the Treatises | Presupposition Behind This Thinking | |---|---| | "Sound-marks are inherently existing / eternally abiding" | The essence and characteristics of things inherently pre-exist | | "Unoriginated and unceasing" | It does not participate in causal flux and is not fabricated | | "Utterance" is merely a "condition for manifestation" | Our activity is not creation, but merely disclosure | | Manifests only upon "repeated utterance" | Disclosure requires conditions and proper occasions |

Abstracting this structure reveals a metaphysics of "pre-existing essence + manifestation as mere disclosure." Later notions—such as "ideas are already there," "truth is merely discovered," or "art merely voices what already exists"—are all distant relatives of this archetype. **School traditions in Indian philosophical history that emphasized sound (śabda) as a valid means of cognition (量, *pramāṇa*)—such as 彌曼差 (Mīmāṃsā) and certain forms of 吠檀多 (Vedānta)—regarded the sacred sound of the 吠陀 (Veda, "Vedas") as eternally valid, extending this exact line of thought into language. Buddhism refuted this view not out of aesthetic distaste, but because once this archetype is operationalized, it immediately collides with a sequence of insoluble logical dilemmas**.

The Structure of the Theory of Manifestation through Conditions and Its Intrinsic Tension

The refutation of this doctrine in both treatises approaches the problem through the query: "Why would an inherently existent thing fail to be manifested?" Laying out its deductive steps layer by layer allows the reader to see how much auxiliary apparatus the sound-theorists were forced to add just to keep their claim "plausible"—and how every added layer birthed a new contradiction.

Layer 1: Does an obstructing condition exist or not? If the mark of sound is inherently existent and eternally abiding, yet goes unheard, an "obstructing condition" (障緣) must be blocking it. However: - If there is no obstructing condition, there is no reason for it not to manifest; inherent existence ought to equal constant manifestation, which contradicts factual experience. - If there is an obstructing condition, then the inherently existent "cause" itself ought to be obstructed. In other words, if the state of being "unmanifested" requires a cause, that cause itself should be affected by the state of "unmanifestation," leading to an infinite regress of obstacles.

Layer 2: Is what is obstructed the "existence-nature" or the "effect-nature"? The sound-theorists must clarify whether the obstructing condition conceals the fact that "this thing exists" (有性, *bhāvatva*, "existence-nature") or that "this thing presents as a specific result" (果性, *kāryatva*, "effect-nature"): - If it conceals the "existence-nature," then whatever exists should never manifest at all—yet we clearly observe many things becoming manifest. - If it conceals the "effect-nature," then the exact same dharma must function both as the "previously unmanifested effect" and the "subsequently manifesting cause." Consequently, it must simultaneously be both manifest and unmanifest, collapsing into self-contradiction.

Layer 3: Is the underlying dharma identical to or distinct from its "manifestation"? Is the ontology of the "sound-mark" identical to or distinct from the event of its "becoming manifest"? - If they are identical, then since the sound-mark is eternally abiding, it ought to be permanently in a state of manifestation—yet we clearly experience it manifesting at times and not at others (for instance, when a song plays in a room, we hear it; when the door shuts, we do not. According to the sound-theorists, the song's sound-mark was not destroyed, but merely toggled between the states of "manifest" and "unmanifest"). - If they are distinct, one must further answer: whence arises this "manifestation"? If it is uncaused, manifestation becomes an origination out of nothing; if it manifests from an unmanifest cause, new problems arise—how can an unmanifest thing serve as the cause for "manifestation"? Must it first render itself manifest before manifesting other things?

Subjected to these three layers of inquiry, every remedial path of the "inherently existent + manifestation through conditions" model runs straight into a wall. The treatises judge it to be an "unreasonable doctrine" (非應理說 in *Yogācārabhūmi*) or an "irrational doctrine" (非如理說 in *Āryasāsanaprakaraṇa*), reaching a concise conclusion: "Know that the theory of sound-marks is likewise so." Since the theory of manifestation through conditions is fundamentally irrational, applying it to sound-marks is naturally irrational as well.

The Buddhist Counter-Example: Temporarily Unapprehendable ≠ Inherently Existent but Unmanifest

A subtle detail easily overlooked here deserves special attention. The *Yogācārabhūmi-śāstra* does not deny the phenomenon of "being existent yet unapprehendable." Things being present yet unobtainable, inaudible, or invisible form part of ordinary experience. The treatise explicitly enumerates six legitimate conditions that explain why something is "temporarily unapprehendable":

1. Great distance (距離遙遠, *dūratva*; e.g., extremely distant stars) 2. Four types of obstructing causes (四種障因; detailed elsewhere in Yogācāra literature) 3. Extreme subtlety (極其微細, *sūkṣmatva*; so minute that senses cannot reach them, such as atomic dust or subtle sounds) 4. Mental distraction (心散亂, *vikṣiptacitta*; attention is absent, leading to missing the object) 5. Damaged sense faculties (根損壞, *indriyavighāta*; impaired senses—blindness or deafness) 6. Not yet acquiring the corresponding wisdom (尚未取得相應智; lacking the conceptual tools or training to interpret it)

The common thread among these six conditions is that they explain the insufficiency of conditions on the side of "apprehending," rather than claiming that the state of "existence" is severed by some mysterious blockage. We fail to apprehend an object because our apprehending capacity lacks adequate conditions, not because the object's existential dimension is mysteriously "locked away." Slipping from "I cannot apprehend it right now" into "it was inherently there all along, merely unmanifested" is precisely the core misjudgment of sound-mark theory. The treatise uses these six examples to block that logical slope: being "temporarily unapprehendable" cannot serve as evidence for being "eternally abiding and awaiting manifestation."

Two Sets of Concepts That Must Be Strictly Distinguished

When organizing these materials, maintaining clear conceptual boundaries is essential to prevent conflating distinct ideas:

| Concept | Source | Real Referent | Relation to Sound-Mark Theory | |---|---|---|---| | Theory of Sound-Marks (外道) | Heterodox doctrine recorded in Yogācāra treatises | Sound-marks are eternally abiding and inherently existent; utterance is merely a condition for manifestation | — | | Marks of Linguistic Science (聲明相) | *Yogācārabhūmi-śāstra* | Items subsumed under the science of language (聲明學, *śabdavidyā*, equivalent to phonetics/grammar): dharma, meaning, sentient beings, time, number, location, basis of roots | Literally similar, but referents are completely distinct; must not be conflated | | Theory of Effect Pre-existing in Cause (因中有果論) | Categorized alongside as manifestation through conditions | The effect already exists in the cause; conditions merely cause the effect to manifest | Same category as sound-mark theory; differs in subject of inquiry (causal relation vs. nature of sound-marks) | | Discourse on Non-Eternal Designations (非常言論) | *Āryasāsanaprakaraṇa-śāstra* | Names are conventionally established based on the aggregation of dharmas, changing along with destruction, modification, combination, and transformation of objects (e.g., "when a jar breaks, one abandons the word 'jar' and produces the word 'shard'") | Opposite direction—discourse on non-eternal designations breaks the sense of permanent names, while sound-mark theory establishes permanent sound-marks |

This distinction must be kept firmly in mind; otherwise, the entire discussion risks drifting into an unrelated topic. Treating sound-mark theory as an "introduction to linguistics" or "linguistic determinism" is a category mistake. It is a metaphysical proposition regarding the existential status of sound's "mark" (*lakṣaṇa*) and "substance" (*bhāva*).

A Walkthrough in Daily Life

Transporting sound-mark theory from canonical treatises into contemporary life requires preserving its original rigorous structure: sound-marks are inherently existent + utterance is merely a condition for manifestation. We can test this model step-by-step through several scenarios encountered daily, examining where it "fits" and where cracks begin to show.

Scenario 1: The Moment a Song "Strikes a Chord"

You hear a song for the first time. The intro plays, and suddenly you feel, "This is it." In that moment, your intuition often whispers: that song was waiting for you somewhere all along, and the singer merely sang it out—it existed before you were born, requiring only today's date, these headphones, and this mood for it to become manifest.

This intuition is the everyday version of sound-mark theory. It offers a profound sense of solace: there are things in the world "prepared just for you," and you are simply meeting them. This is the underlying premise of many romance movies and narratives of destiny—the right person, the right song, the right word, "has always been there."

Yet if we strictly run the logic of sound-mark theory: - You must ask: Why did it manifest only today? Because of the headphones, the mood, the context. These "conditions for utterance" or "conditions for manifestation" are contingent, whereas the sound-mark is eternally abiding. The model accepts this. - But at another time or place, hearing the same song might leave you completely unmoved. According to sound-mark theory, this implies that the identical sound-mark manifested and then retreated back into the unmanifest. This triggers the treatise's first layer of inquiry: why does an inherently existent object alternate between "manifest" and "unmanifest"? What is the obstructing condition? Is this song repeatedly "concealed and revealed"? Is the obscuring agent itself inherently existent and eternally abiding? Once again, we collide with an endless chain. - The Buddhist alternative explanation holds that the song's power to "touch you" is not the manifestation of a pre-existing sound-mark, but the result of the harmonious convergence of multiple conditions: sound waves, your hearing, your memories, your present state, and your cultural background. It was not disclosed; it was generated. Every instance of being touched is a brand-new generation. Thus, listening in a different state leaves you unmoved—a normal manifestation of dependently originated dharmas, not the retreat of some hidden sound-mark.

Walkthrough result: Sound-mark theory offers comfort, but at the cost of turning every instance of "not being moved" into an anomaly requiring explanation. The dependent origination explanation aligns far better with experience—we are naturally not permanently moved by the same song; this is not an anomaly, but the norm.

Scenario 2: A Foreign Word You "Know Perfectly Well But Cannot Utter"

During an oral language exam, a word sits on the tip of your tongue. You hear its pronunciation in your mind, you know its meaning, yet you simply cannot produce the correct sound or complete sentence. Walking out after the exam, the word pops up instantly—or more infuriatingly, it surfaces three days later while taking a shower.

This experience is frequently used to "prove" sound-mark theory: look, that sound-mark was in your mental corpus all along; it merely required "repeated utterance" (here, repeated attempts) to manifest.

Yet this is precisely where the treatises instruct us to be careful. Among the six conditions for being "existent yet unapprehendable," "mental distraction" and "not yet acquiring the corresponding wisdom" correspond directly to this scene: - You suffered mental distraction in the exam room (nervousness, being timed, being observed), severing the retrieval cues for the vocabulary. - Your corresponding wisdom regarding that word was not yet consolidated (if you were truly fluent, you would not forget it—barring temporary freezing under extreme stress).

These six conditions inform us: what cannot be apprehended is due to insufficient conditions on the "apprehending" side, not because the "existence" side is obscured. Thinking of that word as "an inherently existent sound-mark awaiting your condition to manifest it" misinterprets "my temporary incapacity to apprehend" as "its special mode of existence." This is the most common, easily overlooked sleight of hand in sound-mark theory—it exploits our metaphysical misreading of the experience of "not finding."

Scenario 3: AI Image Generation—"That Picture Was Always in the Latent Space"

This is a contemporary analogy that must be used while explicitly marking its limitations.

When using Midjourney or Stable Diffusion to generate images, many experience the following: you input a prompt, the AI generates four images, one of which is stunning. People remark, "Wow, that picture was inside the latent space all along; the model merely retrieved it."

In structure, this statement is identical to sound-mark theory: - The image's "mark" was inherently in the latent space (eternally abiding, inherently existent, unoriginated, unceasing). - The prompt is merely "utterance"—bringing out what was already there. - "Repeated utterance" (sampling multiple times, using different seeds) is required to hit the right one.

This analogy is illuminating because it demonstrates how the conceptual archetype of sound-mark theory remains stubbornly alive in contemporary technological contexts—we habitually view generation as disclosure and the model as a retriever rather than a constructor.

Yet we must simultaneously mark the analogy's limitations: 1. The "marks" in the latent space are not eternal—they are statistical structures learned by the model from training data, shifting with training sets, model architectures, and random seeds. They are not "eternally abiding." 2. The generated image does not "retrieve" an object already existing in latent space; rather, a decoder step-by-step constructs new pixels from latent vectors. Characterized technically, this is generation, not disclosure. 3. The Buddhist refutation of sound-mark theory does not predict technological details of AI, yet its structural critiques—"If it inherently exists, why is it not constantly manifest? What is the obstructing condition? Is the dharma identical to or distinct from its manifestation?"—can be imported wholesale. One realizes that when using the phrase "that picture was always in the latent space," we have not actually answered these questions; we have merely hidden the riddle behind the word "latent space."

This is worth noting in contemporary contexts: the word "latent" itself reproduces the syntax of sound-mark theory—presupposing that what cannot be immediately presented is an entity that is "inherently existent but unmanifest."

Scenario 4: A Child Unexpectedly Saying Something Beyond Their Age

One of the most magical moments experienced by parents occurs when a child suddenly utters a profound, structurally complete sentence: "But Mommy gets tired too." The immediate parental reaction is often: "That thought was in their heart all along."

This intuition is gentle and seductive. Yet walking through the logic of sound-mark theory reveals: - If this sentence were "inherently existent and eternally abiding," it would require no learning, no growth, and no imitation of adult tone and syntax. Yet we observe that a child's linguistic capacity is tightly linked to the linguistic input they have heard, expressed, and received responses to. - If this sentence "manifests only upon utterance," what was the obstructing condition? Why did it not manifest at age five, but suddenly at age six? Was this "manifestation" pure disclosure, or did the child integrate in that moment their own observations, imitations, and emotions?

The Buddhist alternative explanation aligns closer to actual events: the sentence did not pre-exist and then manifest; rather, it was newly generated by the child in that moment based on the totality of conditions (past heard syntax, observations of the mother, contextual triggers, and maturation of linguistic faculties). Because it was generated, it is unrepeatable—confronted with a similar situation next time, the child may say something entirely different. It is not disclosure, but generation; it is not a permanent sound-mark, but a temporary, dependently originated phenomenon.

Scenario 5: A Poem "Emerging On Its Own"

Poets and musicians frequently report that works are not "written," but "arrive." In the shower, near sleep, or between dreaming and waking, an entire melody or line surfaces fully formed. They remark: "This song was there all along; I merely caught it."

This experience has been studied extensively in psychology and neuroscience—it often correlates with the activity of the default mode network (DMN): when executive control relaxes and internal associations surge, the brain pulls seemingly unrelated elements from memory stores and splices them together. This is "generation," not "disclosure"—yet the subjective experience is so compellingly like "disclosure." This constitutes the psychological root of why sound-mark theory finds a market: we harbor a powerful metaphysical misreading of "internally generated experiences," tending to interpret them as "the advent of an external, pre-existing object."

From the Buddhist perspective, this "feeling of advent" is real, and the subjective experience is genuine, but it proves no inherently existent, eternally abiding sound-mark. It proves only that the mind's constructive capacity is far more powerful than we imagine. This is precisely what the Yogācāra and Mind-Only (唯識) traditions repeatedly emphasize: all realms are produced and manifested by the mind, and the operation of the mind itself functions through dependent origination (緣起, *pratītyasamutpāda*).

Why Contemporary Readers Need This Concept

Sound-mark theory is a concept whose name contemporary readers may never have heard, yet whose underlying logic they use daily. It is important because it serves as a prototypical instance of the metaphysical archetype: "pre-existing essence + manifestation as mere disclosure." This archetype possesses at least four active branches in contemporary culture, each worth exposing to light.

1. Language and Meaning: Are the Words We Utter "Inherently There" or "Constructed in the Moment"?

The prototypical question of sound-mark theory—whether words carry pre-existing meanings—reappears continually across contemporary philosophy of language. Taking it as absolute truth leads toward linguistic determinism (the strong version of the Sapir-Whorf hypothesis): language is not a tool, but a prison; meaning is pre-carried by it. Taken to extremes, it breeds assertions like "certain statements *are* inherently correct," "certain words *are* inherently dirty," or "a certain culture *inherently* thinks this way." Standing behind these claims is a sound-mark theory accepted as an unexamined self-evident premise.

The Buddhist alternative perspective—that names and terms are established conventionally in accordance with affairs, shifting along with conditions—represents the side of what the *Āryasāsanaprakaraṇa-śāstra* calls 非常言論 ("discourse on non-eternal designations"): when a jar breaks, the name "jar" abdicates to the word "shard"; when a gold bar is forged into a bracelet, the name "gold bar" gives way to "bracelet." Names are not containers carrying fixed essences, but conventional designations established as conditions converge. This perspective offers structural insights into contemporary cross-cultural communication, gender discourses, and terminology updates—without exaggerating that Buddhism "foresaw" these issues; it simply offers a thoroughly tested view of language.

2. AI and Latent Representation: The Metaphysics of the Word "Latent"

As noted earlier, machine learning treats "latent space," "latent representation," and "latent variables" as foundational concepts. The word "latent" itself embeds the syntax of sound-mark theory: derived from the Latin *latēre* (to lie hidden), it means "present, but not yet manifest." While this syntax is exceptionally convenient, it is highly prone to mislead—suggesting that these representations are "pre-existing," waiting to be retrieved.

The Buddhist refutation of sound-mark theory does not predict AI technology, yet its checklist of structural questions—obstructing conditions, whether the dharma and its manifestation are identical or distinct, whether what is obstructed is existence-nature or effect-nature—serves as a useful mirror for clarifying what we presuppose when deploying the word "latent." It reminds us that naming something "latent" does not explain why it has not manifested—we must still answer those ancient questions.

3. Discovery vs. Creation: The "Pre-Existing Essence" Presupposition in Science, Art, and Ethics

The deepest impact of the sound-mark archetype lies at the bedrock of the debate over whether truth is "discovered" or "created." In Mathematical Platonism, the Pythagorean theorem was "always there"; in certain forms of Scientific Realism, electrons and gravitational waves were "always there"; in certain artistic views, the composition of the *Mona Lisa* was "always there" in Da Vinci's mind. Behind each statement lies the same sound-mark presupposition: essence pre-exists; activity merely discloses.

This presupposition is not entirely wrong—it inspires a faith in deep order that is vital to science and art. Yet it carries a cost: when we excessively mistake generation for disclosure, we overlook agency, constructiveness, sociality, and historicity. We forget that mathematical proofs are constructed; scientific models are built; interpretations of artworks are generated. The Buddhist refutation of sound-mark theory does not deny the existence of deep order; rather, it cleanly delineates the line between "discovery" and "construction"—warning us that mistaking construction for discovery is frequently the breeding ground for ideology and rigid prejudice.

4. Dependent Origination vs. Manifestation: A Choice Between Two Worldviews

Finally, and most fundamentally: sound-mark theory represents a worldview of "underlying pre-existence, where the surface is mere manifestation"; Buddhism (especially Yogācāra, Mind-Only, and Madhyamaka) represents a worldview where "all dharmas are dependently originated and devoid of intrinsic nature" (諸法緣起，無有自性, *pratītyasamutpanna*). These two worldviews are not mutually exclusive in all practical matters—they can run parallel in many everyday contexts—yet when confronting the question "Why does this phenomenon present itself to me in this way?", they point in opposite directions:

- The theory of manifestation through conditions tends to say: Because it was there all along, and only now are you allowed to see it. - The theory of dependent origination tends to say: Because various conditions (yours, its, and the context's) happened to converge in this manner, it presents like this.

These two answers directly shape our attitudes toward responsibility, creation, change, and healing. If a traumatic pattern were "inherently existent and eternally abiding," changing it would mean waiting helplessly for a "condition of manifestation" to arrive; if it is dependently originated, we can foster new origination and cessation by transforming conditions. This is no minor detail; it is the watershed of an entire practical ethic.

Common Misreadings and Clarifications

To conclude, here is a targeted checklist of the most frequent misreadings, pointing directly to the crux of each issue.

Misreading 1: "The theory of sound-marks is just an introduction to phonetics/linguistics."

Clarification: Not at all. In the *Yogācārabhūmi-śāstra*, there is a separate term called 聲明相 (śabdavidyā-lakṣaṇa, "marks of linguistic science")—which covers phonetics, grammar, and linguistic analysis, enumerating items such as dharma, meaning, sentient beings, time, number, location, and the basis of roots. The "sound-mark" (聲相) in sound-mark theory is a metaphysical term, referring to the "characteristic/mark" of sound as an eternally abiding entity. Though literally similar, their referents are distinct. The distinction between these two terms must be preserved during research and citation, lest the discussion be dragged into an entirely different topic.

Misreading 2: "Buddhism refutes the theory of sound-marks because it denies that language has meaning."

Clarification: Quite the contrary. Buddhism has never denied language's functions of pointing, communicating, or interpreting. What Buddhism refutes is the presupposition that "language carries eternal essences," not language itself. When the *Āryasāsanaprakaraṇa-śāstra* discusses 非常言論 ("discourse on non-eternal designations"), it explains in detail how names and terms are established in accordance with affairs and how they change through combination and transformation—it seeks to break the sense of permanence attached to names, not the function of names. This distinction is vital for contemporary readers, who can easily mistake the critique of "essentialism" for a denial of "linguistic utility."

Misreading 3: "Manifestation-through-conditions theory = dependent origination theory; both say everything manifests based on conditions."

Clarification: These two doctrines are literally similar but point in opposite directions, making them the most easily conflated. Keep this distinction firmly in mind:

| | Manifestation-through-Conditions Theory (Sound-mark theory, Effect-in-cause theory) | Dependent Origination Theory (Buddhist Core) | |---|---|---| | Mode of existence of dharmas | Inherently pre-existent, merely awaiting conditions to manifest | Arises dependent on conditions, devoid of independent intrinsic nature | | Role of conditions | Condition for manifestation (disclosure) | Condition for origination (generation) | | Essence of dharmas | Eternally abiding, immutable | Impermanent, dependently originated, non-self |

Glossing over this difference effectively erases the entire force of the Buddhist refutation of sound-mark theory. Both appear to "value conditions," but the former presupposes an entity waiting to be revealed, while the latter asserts there is no such entity at all—only aggregated phenomena.

Misreading 4: "Since Buddhism states that 'temporarily unapprehendable' does not equal 'eternally abiding awaiting manifestation,' does that mean whatever I cannot apprehend right now does not exist?"

Clarification: Absolutely not. The treatises explicitly acknowledge the existence of "existent yet unapprehendable" phenomena, listing six conditions: distance, obstructing factors, extreme subtlety, mental distraction, damaged sense faculties, and lack of corresponding wisdom. What Buddhism refutes is the logical leap from "temporarily unapprehendable" to "eternally abiding and inherently existent." Something can genuinely exist (it is not a hallucination), yet we cannot apprehend it right now—this experience requires no explanation through "inherent existence," but merely through insufficient conditions on the apprehending side. Existence ≠ Eternal Abiding ≠ Inherent Existence ≠ Awaiting Manifestation. These four concepts must be strictly separated.

Misreading 5: "Isn't the theory of sound-marks just Plato's Theory of Forms?"

Clarification: Structurally they are kin, but their history and problem contexts differ. Plato's Theory of Forms was proposed within Greek philosophy to address the bifurcation between the visible and intelligible worlds; sound-mark theory was proposed within Indian philosophy to address the source of sound's validity as a means of cognition (pramāṇa)—specifically the eternity of the sacred sounds of the Vedas. Both share the same archetype ("pre-existing essence + manifestation as mere disclosure"), but their specific applications, debating opponents, and refutation paths differ. Equating them flattened two distinct historical trajectories into a single word.

Misreading 6: "Since the theory of sound-marks is refuted, does that mean our words are nothing at all?"

Clarification: Buddhism never went to that extreme. Words, concepts, and designations possess their pointing functions—this is what 依他起 (paratantra, "other-dependent nature") and 假名 (prajñapti, "conceptual designation") can sustain. But they do not possess the capacity to carry eternal essences—that is a fabrication belonging to 遍計所執 (parikalpita, "fully conceptualized nature"). Refuting sound-mark theory dismantles the presupposition that "language carries eternal essences," not language itself. What remains is a harder, yet more honest position: we use language to point to the world, communicate, and construct meaning, but this pointing, communicating, and constructing is itself dependently originated, conditional, and re-configurable.

Returning to the definition at the start: Sound-mark theory—a heterodox doctrine asserting that sound-marks are inherently existent and eternally abiding, becoming manifest solely through utterance. Every word of this definition carries weight:

- "Inherently existent and eternally abiding": Presupposes an entity that does not participate in origination and cessation. - "Becoming manifest solely through utterance": Reduces our human activity to disclosure rather than generation. - "Heterodox doctrine": Buddhism never co-opted it as its own claim, but placed it within Yogācāra treatises as an object to be systematically refuted.

While the refutation paths of the two treatises—the presence or absence of obstructing conditions, whether what is obstructed is existence-nature or effect-nature, whether the dharma and its manifestation are identical or distinct—are formally arguments of medieval Indian logic, their questions cross time: Any doctrine asserting that "essence pre-exists and activity is mere disclosure" will sooner or later crash into these exact same three walls. Contemporary readers will see the shadow of sound-mark theory time and again in AI latent spaces, Mathematical Platonism, the romantic narrative of "that song was waiting for me," or the parental intuition that "my child's words were in their heart all along."

To recognize this archetype, to see through it, and yet not be captured by misreadings from its opposite—this is perhaps the greatest gift left to posterity by the Yogācāra masters, who recorded it in meticulous detail, and refuted it in meticulous detail.