The classical entry offered here is one sentence — "诸法相应关系及其自性之义" — but the principle it names is doing heavy lifting. It gathers two threads that the Buddhist analytical traditions refuse to separate: 相应 (xiāngyìng) — the structured co-arising among phenomena — and 自性 (zìxìng) — the defining character of each phenomenon in itself. Together they form a paired lens for looking at anything at all. To see something rightly, you must see both what it intrinsically is and what it is interlocked with. Miss either side and your view goes thin.
What follows is a careful walk through both halves, why they belong together, how they show up in ordinary life, and where contemporary readers most often misread them. I'll be transparent where the source material is brief and I'm drawing on the broader tradition to interpret.
1. What this concept is saying
The two halves of the principle
自性 (zìxìng) — "self-nature," often rendered "own-nature." In Abhidharma analysis, every dharma — every phenomenon, factor, or event — has a defining profile: a set of marks (相), a characteristic activity (业), conditions that bring it about (因), results it tends to produce (果), and the way it differs from neighboring dharmas. That profile is its 自性. To know 贪 (greed) by its 自性 is to know what specifically distinguishes it from 嗔 (aversion), 痴 (delusion), 慢 (pride), and so on — its specific heat, its specific outward push, its specific clinging. Each of the 烦恼 (afflictions) has a self-nature; each of the 善心所 (wholesome mental factors) has a self-nature; each of the 51 mental factors catalogued in the Yogācāra tradition has one.
Crucially, this is not the metaphysical "essence" (svabhāva in the Brahmanical sense) that early Buddhist teaching directly critiques. Buddhist 自性 is descriptive and functional, not an unchanging substrate. It is what lets you say, in careful language, "this is X and not Y" — without committing to a hidden eternal core behind the labels.
相应 (xiāngyìng) — "correspondence" or "mutual coherence." This is a precise technical term in Yogācāra, especially as developed in the *Chéng Wéishì Lùn* (成唯识論) tradition. A mental factor (心所) is said to *correspond* with its associated consciousness (心) when they meet four conditions together:
- 同所缘 (tóng suǒyuán) — they take the same object of apprehension. - 同所依 (tóng suǒyī) — they rest on the same supporting base (a sense faculty or a subtler consciousness). - 同时 (tóng shí) — they arise in the same instant. - 同行相 (tóng xíngxiāng) — they present the same mode of apprehension.
When all four are met, the factor and its consciousness are not merely sequential or adjacent — they are tightly interlocked, mutually defining. When one condition is missing, they are *not* properly corresponding.
This four-fold standard is what gives 相应 its analytical bite. In ordinary speech "everything is connected" becomes a vague spiritual platitude; in this technical sense, *connected* means meeting all four conditions simultaneously. That is a much sharper claim.
In the wider Abhidharma literature, 相应 also covers how a chain of factors (sense object → sense faculty → consciousness → contact → feeling → craving → clinging → becoming) does not merely succeed one another but arises as a structured whole — each item corresponding to its neighbors along specified axes.
Why the pair is held together
The genius of the composite 相应自性义 is that it refuses two opposite errors that have surfaced repeatedly in Buddhist and non-Buddhist thought:
- Pure essentialism: A thing is fully captured by what it is in itself. (Anger is "anger." Done.) - Pure relationism: A thing is fully captured by how it relates to other things. (Anger is just a label for a pattern of arousal; there's no "it" inside.)
The Buddhist tradition insists: neither alone is sufficient. To know a phenomenon rightly you need both. 自性 without 相应 leaves you with a static label, unable to see how the phenomenon arises in real situations. 相应 without 自性 leaves you with a web of relations that has no distinguishable nodes.
In the Yogācāra framework, when discussing how the 51 mental factors are "established" (建立) as discrete factors, the tradition typically enumerates four defining aspects: 自性 (defining character), 相应 (correspondence pattern), 行相 (active appearance), and 染净 (pure-impure quality). 相应 and 自性 are the first two of these four — so they are not an arbitrary pair but a foundational two-step: name what the dharma is, then locate it in its relational web.
This pairing sits inside a larger Buddhist refusal of 边见 (diān jiàn) — the swing between extremes. The principle of 相应自性义 is itself a *middle*: between essence and relation, between isolation and dissolution.
2. Investigation in daily life
The two questions the principle urges — *What is this in itself?* and *What is it interlocked with?* — are surprisingly easy to run on ordinary moments, if you let yourself slow down.
Walk-through A: An argument with your partner
You've just had a sharp exchange. You sit in the next room, heart pounding. Modern vocabulary offers "I'm upset," "we had a fight," "I feel hurt." The Buddhist principle asks for finer grain.
Self-nature side. Pause and ask: what is this, precisely? The classical catalog offers candidates:
- 嗔 (chēn) — aversion, anger. Its defining mark is a heat, a push-away, often a search for a target to blame. - 忿 (fèn) — resentment, grudge-holding. Different from 嗔: it broods, replays, accumulates. - 忧 (yōu) — worry or sadness about something. Different from 嗔: it pulls inward rather than pushing outward. - 慢 (màn) — pride. Not the heat itself, but the "I am right and they are wrong" inflating the heat. - 痴 (chī) — confusion, the inability to see what is actually happening.
You might find that what you first called "anger" is actually a tangle: some 嗔, some 慢 ("if they really loved me they would have understood"), some 痴 (a story you've added that wasn't in their words). The 相应自性义 move is to keep separating until you can name the actual factors in the cluster — *this is aversion, this is pride, this is confusion, this is hurt.* The precision is not pedantry. Each factor has a different antidote. Naming matters.
Correspondence side. Now ask: with what does this cluster co-arise?
- Which consciousness? Eye consciousness, seeing their face? Ear consciousness, hearing the tone? Or mental consciousness (意识), fired by your interpretation of their words rather than by anything they actually said? - Which base? Is it arising on the base of a sense faculty in the present moment, or on the base of an older memory — a parent's voice, a childhood wound? - Which companions in the same instant? Often 慢 rides with 嗔 ("I'm right, they're wrong"). Often 疑 (doubt) rides with 忧 ("do they even care about me?"). Often 悔 (remorse) rides with the whole cluster, replaying what you should have said. Naming the cluster is part of seeing the dharma at all. - Which volition (行, xíng)? The will to attack, to defend, to leave, to win, to explain, to make them understand — these are different 行 factors and they shape the next moment differently.
Modern affective science is increasingly arguing something parallel — that "emotion" is not a single thing but a constructed assembly of sub-processes (perception, appraisal, bodily response, motor tendency). Buddhist analysis gives a 2500-year taxonomy that is not identical but is strikingly granular. Where the science is still working out its categories, the Buddhist catalog has long lists ready. The point is not that science "proves" the catalog, but that the move of unpacking coarse feelings into finer components is shared.
Walk-through B: Scrolling your phone at 1 a.m.
You told yourself you would sleep. Now you are scrolling.
Self-nature side. What is happening, in classical terms?
- 贪 (tān) — wanting. The reaching for the next item. The dopamine loop. The unwillingness to put it down. - 掉举 (diào jǔ) — restlessness, agitation. The mind jumping from one thing to the next, unable to settle. - 寻 (xún) — applied thought, the scanning, the engaging with content. - Or perhaps — paradoxically — 昏沉 (hūn chén) and 睡眠 (shuì mián, here as a mental factor) — the body is exhausted, but the mind keeps grabbing for stimulation to avoid sinking into its own tiredness.
These are not the same, and the right response differs. For 贪 you let go. For 掉举 you settle. For 昏沉 you energize. A single label — "I can't sleep" or "I'm addicted to my phone" — flattens all of these and so makes all interventions blunter.
Correspondence side. What is this cluster interlocked with?
- The eye, ear, and mental consciousness all firing. - A particular bodily 触 (contact) — the phone in hand, the dim light, the bed. - An emotional base — often loneliness, anxiety, boredom, FOMO. The phone is rarely just a phone. - A habit-pattern so tight that the moment you lie down, the hand reaches. This is 习气 (xí qì) — the karmic "groove" that has worn itself deep.
Without naming the 自性 you can't apply the right medicine. Without seeing the 相应 you can't unwind the knot — because the knot is not just one strand.
Walk-through C: The meeting that felt pointless
You sat through a long meeting. It ended. You feel flat.
Self-nature side. Is this 忧 (sadness)? 悔 (remorse) for something you didn't say? 惛沉 (lethargy)? Or something less heavy — perhaps just the natural settling that follows extended attention, closer to a wholesome 舍 (equanimity) than to an affliction?
Correspondence side. With what does this arise? With the object of the meeting itself (the content), or with a comparison ("I could have done something more meaningful")? With the eye and ear consciousness present throughout? With the bodily contact of sitting for an hour? With a particular volition (行) — the will to escape that you suppressed?
The interesting move is when the coarse label — "boring meeting" — turns out, on close inspection, to be a faint mix of fatigue, mild resentment, and a wish to be elsewhere. Once you see that, the whole cluster becomes workable in a way the coarse label never was.
The mapping that most often goes wrong
In each of these walks, the most common contemporary misstep is to stop at 自性 alone with a vague label ("stress," "anger," "boredom"), or to dissolve into 相应 alone with a story about how everything is connected. The principle 相应自性义 asks for both, held together.
3. Why contemporary people need it
Three reasons stand out, each tied to a feature of the present moment.
3.1. Diagnostic precision in an age of coarse vocabulary
Modern emotional and mental-health vocabulary is famously thin. "I'm stressed." "I'm anxious." "I'm depressed." "I'm triggered." These labels often function as stop-signs rather than descriptions — they close the inquiry rather than open it. Yet the phenomena they point to are not single things. Affective neuroscience is increasingly showing that what we call "anxiety" is composed of many sub-processes (threat detection, autonomic arousal, attentional narrowing, future-oriented cognition, avoidance impulses); "depression" similarly bundles many components. The science is still working out its taxonomy.
Buddhist analysis has been refining this taxonomy for centuries. The Abhidharma and Yogācāra schools enumerated 51 mental factors with specific self-natures; later traditions such as the *Abhidharma-samuccaya* compiled systematic lists of afflictions with their defining marks. The contemporary value is not that this catalog is "scientifically verified" — it isn't, and the science on emotion is still unsettled — but that it offers a far finer palette than our everyday language, and that precision matters for any skillful response.
A doctor who only knows "the patient has a fever" cannot treat well. Someone who knows the fever is malarial, viral, or inflammatory can. The principle 相应自性义 asks the same of inner life: name the dharma precisely.
3.2. Restoring relational sight in a self-centric culture
Contemporary self-culture is heavily skewed toward 自性 without 相应. "Know yourself." "Follow your heart." "Be authentic." "Find your truth." These slogans assume that the self has an interior that can be discovered independently, that relations are secondary to essence.
The Buddhist principle quietly corrects this by insisting relations are built into the structure. A feeling is not a sealed-off interior event; it is something that *corresponds with* — arises together with — particular objects, bases, times, and modes. This is not a retreat into "no self"; it's a sober account of how any experience is composed.
Interestingly, contemporary fields outside Buddhism are also pushing in this direction. Attachment theory emphasizes that early relations shape what feelings are even possible. Network theory treats identity as nodal, not atomic. Even AI ethics is wrestling with what it means for an entity with no apparent 自性 to act as if it has one — entirely constituted by its training relations. None of these prove the Buddhist principle, but they make it feel less foreign.
3.3. Resisting ideological swings
Many contemporary ideological battles are essentially fights between a pure-自性 position and a pure-相应 position:
- "This group is essentially X." (Essence claim.) - "This group is purely a social construction." (Pure relation claim.)
The paired principle 相应自性义 offers a third move: hold both. See the patterned self-natures (people really do tend to develop characteristic affliction-clusters under certain conditions) AND the corresponding relations (those patterns are not fixed essences but arise in specific conditions and can change when conditions change). This is neither essentialism nor constructivism but a careful phenomenology of conditioned experience.
4. Common misreadings and clarifications
4.1. Misreading: 自性 means "essence" or "unchanging nature"
This is the single most common error. Under the influence of Western metaphysics or popular Hindu-influenced readings, readers bring to 自性 the connotation of *svabhāva* as a permanent inner essence — a "true self" behind the changing appearances. But this is precisely what the Buddha's teaching critiques (e.g., in the early suttas' refusal of an unchanging self in the five aggregates, and in the Mādhyamaka critique of svabhāva). Buddhist 自性 is descriptive and functional: the marks that let you identify a dharma and distinguish it from others, not a hidden eternal core. A useful analogy is a *recipe* — the recipe is real and identifiable, but there is no "essence of chocolate cake" floating somewhere independent of any actual cake.
4.2. Misreading: 相应 means "everything is connected"
In contemporary spiritual talk, "we are all connected" has become a feel-good slogan. The technical sense of 相应 is much more demanding: it specifies the four-fold sameness (object, base, time, mode) that must be present for genuine correspondence. Without these, things are merely sequential, not corresponding. The slogan flattens; the principle sharpens.
A related error is treating 相应 as a synonym for 缘起 (pratītya-samutpāda, dependent origination). The two are kin but not identical. 缘起 names the general conditionedness of all phenomena; 相应 names a particular kind of structured co-arising in which factors meet on the same object, base, time, and mode.
4.3. Misreading: This is just abstract analysis, not practice
Reading 相应自性义 through a Western philosophical lens, one might conclude this is taxonomy for its own sake. But in the Buddhist traditions that developed it, the principle is soteriological — aimed at liberation. Why name the 自性 of 嗔 precisely? So that you can recognize it in real time and untangle it. Why map its 相应? So that you can see the whole knot, not just one strand, and unwind it at the right place. The analysis is in service of release.
This means the principle is not merely something to think about; it is something to train. The Satipaṭṭhāna (foundations of mindfulness) practices, the contemplation of mental factors in various Abhidharma manuals, and the detailed vipaśyanā (insight) analyses in Yogācāra all cultivate this paired seeing. Without the training, the principle remains an interesting idea; with it, it becomes a way of seeing.
4.4. Misreading: If there's no essence, then nothing really matters
A nihilist reading goes: "If 自性 is not a fixed essence, then everything is empty and arbitrary." But 相应自性义 does not say phenomena lack self-nature; it says their self-nature is *descriptive*, not metaphysical. Phenomena are still recognizable, still patterned, still treatable. The principle refuses both eternalism (things have eternal essences) and nihilism (things are nothing at all). It lands in the middle: things are precisely what they are, moment by moment, without needing an unchanging core.
4.5. Misreading: It requires being a scholar-monk
The classical scholastic elaboration of 相应 and 自性 runs through many volumes of Abhidharma and Yogācāra literature, which can make the principle feel inaccessible. But the basic move — *what is this, really, and what is it tangled up with?* — is available to anyone willing to look carefully. A child can ask "is this anger or sadness?" and "what set it off?" without knowing a single Sanskrit term. The training is in the asking, not in the vocabulary. The vocabulary helps, but it is not the gate.
Closing note
The classical entry is brief, but the principle it names is the kind of brief thing that holds up a great deal. To ask "what is this in itself?" is to insist on precision; to ask "what is it corresponding with?" is to insist on context. To hold both questions at once, in any moment, is to practice a kind of seeing that does not flatten into either essence-talk or relation-talk. The principle 相应自性义 is, at its heart, a discipline of double-vision — accurate and contextual, sharp and embedded — that the Buddhist analytical traditions developed over centuries for the practical purpose of unwinding the knots of affliction. Used carefully, it remains one of the more useful lenses the tradition offers for looking at one's own experience.