1. What This Concept Is Saying
"真如法" (tathatā-dharma, "the dharma of suchness") is a compound word made of two layers of meaning stacked together. To understand it, we must first take it apart.
Level One: What Is "真如" (tathatā, "suchness")?
"真" means truly real, without any falsity; "如" means as it is in itself, neither increased nor diminished. Together, "真如" means that which is real and thus-as-it-is.
This is what the Mahāyāna scriptures point to again and again. It is not some mysterious entity, not a creator god, not some special state. It refers to the substance of all dharmas—that nature by which every dharma is immediately present as it is, unchangeable, unalterable.
The *Mahāyāna-śraddhotpāda-śāstra* (《大乘起信论》, "Awakening of Faith in the Mahāyāna") gives a very clear description of tathatā, to this effect:
一切法从本以来，离言说相，离名字相，离心缘相，毕竟平等，无有变异，不可破坏，唯是一心，故名真如。
*"All dharmas from the very beginning are free from the mark of speech, free from the mark of names, free from the mark of mental grasping; ultimately equal, without change, indestructible, being only one mind—therefore called tathatā."*
This passage marks out the boundaries of tathatā: it cannot be exhausted by language, cannot be exhausted by concepts, cannot be fathomed by thought ("free from the mark of mental grasping"); it is originally equal, without any change, indestructible. This is the shared description across the Mahāyāna—tathatā is not something that can be seized, but that original which shows itself through all seizing.
The famous line of the *Heart Sūtra* (《心经》, Prajñāpāramitāhṛdaya-sūtra)—"the mark of emptiness of all dharmas: neither arising nor ceasing, neither defiled nor pure, neither increasing nor diminishing"—speaks of the same thing: the mark of emptiness does not mean "there is nothing at all," but that it has never arisen, never ceased, never been defiled, never been increased. Every dharma is immediately this mark of emptiness—that is, immediately tathatā.
Level Two: What Is "法" (dharma)?
In Buddhism, the word "法" (dharma) has an extremely wide range of meanings. It can refer to any thing ("诸法," all dharmas), to principle (法理, dharma-principle), to the teaching (佛法, the Buddha-dharma), to rules (持法者, "dharma-holders").
In the term "真如法," "法" refers to the first two—things as "all dharmas," and the true reality as "dharma-principle."
Level Three: Putting Them Together—Dharmas That Have Tathatā as Their Substance or as Their Object of Expression
Putting the two layers together, the definition of "真如法" emerges: dharmas that have tathatā as their substance, or as their object of expression. This sentence actually states two relations, and both are indispensable:
First: dharmas that have tathatā as their substance. This is stated from the side of ontology. The substance of all dharmas is tathatā—mountains, rivers, the great earth, grasses, trees, tiles and stones, the present thought-moment—none are otherwise. "Having tathatā as substance" does not mean that tathatā is outside dharmas or above dharmas, but that every dharma in its very substance is tathatā; apart from tathatā there is nothing else.
This is the true reality jointly pointed to by the *Avataṃsaka-sūtra* (《华严经》, "Flower Garland Sūtra"), the *Awakening of Faith*, the *Sūtra of Perfect Enlightenment* (《圆觉经》), and other Mahāyāna scriptures. The scriptures often gather it up in one phrase: "All dharmas are thus (如)." —That "如" is tathatā.
Second: dharmas that have tathatā as their object of expression. This is stated from the side of teaching. The Buddha saw this tathatā, but knew that tathatā is ineffable ("free from the mark of mental grasping"); in order to let sentient beings comprehend it, he used various languages, similes, and methods of practice to express it and point to it. Those teachings, practices, and states that take tathatā as their object of expression are collectively called tathatā-dharma.
For example, the *Heart Sūtra* speaks of "illuminating the five aggregates (五蕴, pañcaskandha) as all empty, and crossing beyond all suffering and calamity"—this is a dharma with tathatā as its object of expression; the *Diamond Sūtra* (《金刚经》, Vajracchedikā-prajñāpāramitā-sūtra) speaks of "giving rise to the mind without abiding anywhere"—this too; the *Śūraṅgama Sūtra* (《楞严经》) speaks of "the wondrous enlightened bright mind, originally without arising or ceasing"—this as well. These scriptures all point to that original thus-as-it-is tathatā, and so they are all tathatā-dharma.
Boundaries: Relations with Easily Confused Terms
In Buddhist doctrinal studies, there is a string of terms close in meaning to "真如": 法性 (dharmatā, "dharma-nature"), 实相 ("true reality"), 涅槃 (nirvāṇa), 佛性 (buddhadhātu, "buddha-nature"), 如来藏 (tathāgatagarbha, "the womb of the Tathāgata"), 自性清净心 ("the intrinsically pure mind"). They all point to the same thing, but from different angles:
- 法性 (dharmatā, dharma-nature): emphasizes "the intrinsic nature of all dharmas," stressing that tathatā is what dharmas inherently possess. - 实相 (true reality): emphasizes "the real appearance," stressing that tathatā is the true form manifested by dharmas. - 涅槃 (nirvāṇa): emphasizes "the ultimate quiescence after the extinction of afflictions," stressing tathatā as the state to be realized. - 佛性 (buddhadhātu, buddha-nature): emphasizes "the possibility of becoming a buddha," stressing that tathatā is inherently present in sentient beings. - 如来藏 (tathāgatagarbha): emphasizes "the Buddha in the minds of sentient beings," stressing that tathatā, though veiled by afflictions, has always been there.
Looking at these terms side by side, one can see: tathatā is not an isolated term; it is one of many names the Mahāyāna uses to refer to the same true reality. The term "真如法," then, emphasizes those dharmas that have this true reality as their substance or as their object of expression—including both the true reality itself and the teachings that express it.
2. Walking Through It in Daily Life
Tathatā-dharma is a metaphysical concept, but the direction it points to is not floating in the sky. It is very close to our daily life—it is just that we are so used to being carried away by the surface that it feels distant.
Let us walk through every step of this concept with a few scenes familiar to contemporary people.
Scenario One: The "Original Face" in an Intimate Relationship
You have been with a person for a long time. You have loved, expected, quarreled, and grown weary together. One day, the other person asks you: "Do you really know me?"
Many images float up in your mind—their smile, their anger, their good sides, their bad sides. But in your heart you know these are only facets of them, the person you saw at certain moments, in certain moods.
What "真如法" points to here is not the collection of these facets, but the question:
Beneath all these facets, what is that original thus-as-it-is person, really?
That which is not "good," not "bad," not "right," not "wrong," yet allows all these "good," "bad," "right," "wrong" to appear—that is the counterpart of tathatā in a relationship.
By the classical definition, it is "free from the mark of speech, free from the mark of names, free from the mark of mental grasping, ultimately equal, without change, indestructible"—that is to say, it cannot be exhausted by labels like "good" or "bad," cannot be determined by your expectations and disappointments about them, cannot be "destroyed" by your history together. It is simply so, unalterably.
Scenario Two: The "Original" When Emotions Arise
You are in a meeting. Your boss suddenly says something that makes you lose face. In an instant, anger surges up—your face heats, your heart races, a hundred rebuttals appear in your mind.
If at this moment you give yourself a little space, not immediately entering the script of rebuttal, but letting the anger rest for a moment, you will see:
- Anger is not a formless chaos—it has an arising, a development, a sharpest moment, and a gradually dispersing moment. - Within the anger, you can feel the body's responses (heartbeat, heat, tension). - Beneath the anger, you can notice something softer—perhaps grievance, perhaps exhaustion, perhaps the small wish of "I want to be respected."
What "having tathatā as substance" points to here is that which allows anger to arise, to disperse, and to be observed by you.
It is not "I" (because "I" deforms when anger arises), nor is it "anger" (because anger passes away). It is that emptiness which allows all this to happen and to be observed—in the words of the *Heart Sūtra*, the mark of emptiness that is "neither arising nor ceasing, neither defiled nor pure, neither increasing nor diminishing."
The dharma that "has tathatā as its object of expression," at this moment, can be any method of practice: awareness of breath, body scanning, merely quietly "watching"—these are all tools that teach us how to touch the original, rather than being carried away by the surface.
Scenario Three: The "Original" While Scrolling Your Phone
You pick up your phone, intending to "look something up," and two hours later you come back to yourself and find you have scrolled through a hundred short videos.
If at this point you are willing to observe, you will see a very clear structure: picking up the phone → hooked by some headline → clicking in → hooked by the next → clicking in again... The whole process is unconscious; you are being pushed along.
What is the counterpart of "真如法" here?
It is not telling you to uninstall your phone, not telling you to build willpower (that is the surface). It points to: while you are being pushed along, that awareness which "knows you are being pushed along"—
that awareness is not the phone, not the short videos, not your "I" (because "I" deforms while being pushed along), but that which allows all this to be seen.
This is precisely what the scriptures call "free from the mark of mental grasping, ultimately equal, without change"—because this awareness does not scroll short videos; it does not switch along with you; it is simply so, knowing you scroll, knowing you do not scroll. It does not disappear because of your absorption, nor does it grow by even a bit because of your clarity.
Where the Mapping Most Often Goes Wrong
- Mapping error one: understanding "真如" as "the true essence" or "the core truth," and then going to look for "the truth." The worldly "truth" is different from tathatā—truth is the actual state of a particular matter ("he actually doesn't want to break up"), whereas tathatā is that nature which every dharma is immediately in its very substance. Truth can change; tathatā does not. - Mapping error two: understanding "having tathatā as substance" as "tathatā is inside dharmas" or "there is a tathatā behind dharmas." This turns tathatā into a "behind-the-scenes entity." The scriptures repeatedly say "free from the mark of mental grasping": tathatā is not inside dharmas, not outside dharmas, not behind dharmas—it is the very substance of dharmas; apart from dharmas there is no tathatā. - Mapping error three: equating "真如法" with some mystical experience (enlightenment, absorption states). As a teaching, tathatā-dharma is a path; as substance, it is the present original. It does not require you to reach some special state to touch it. - Mapping error four: treating "真如法" as a nihilism of "nothing changes" or "anything goes." Wrong. The unchangingness of tathatā means that it itself has no variation—not that you need not change in how you strive or how you conduct yourself. On the contrary, precisely because tathatā is unchanging, practice has meaning; precisely because the original mind is undefiled, stopping evil and cultivating good have value.
3. Why Contemporary People Need It
Contemporary life has three characteristics that make "真如法" especially important.
First, we are wrapped too thickly in appearances. Algorithmic feeds, social media, photo-editing software, short videos... they all train us to see surfaces, fragments, what others want us to see. In such an environment, the awareness of "thus-as-it-is" becomes thin—we find it increasingly difficult to touch the real appearance of things (and people).
The wisdom of tathatā-dharma does not ask us to flee these technologies; it reminds us: beneath all these appearances, there is still an original that neither increases nor diminishes. It does not deny the surface, but lets people see beneath it.
Second, we live in a culture of "flow." Today's opinions, tomorrow's persona, the day after tomorrow's trends... everything is changing. In such an environment, people especially easily lose their "anchor"—not knowing who they really are, what they believe, what they hold to.
What tathatā-dharma calls "without change, indestructible" does not ask us to become rigid; it says: within all these changes, there is something that does not change—the awareness itself that lets you know "I am changing." It does not move; that is the anchor.
Third, we live in an era where the "self" is being redefined by algorithms. Algorithms shape you by your clicks, decide what you see by your browsing, predict your next move by your reactions. In such an environment, "I" increasingly becomes a product shaped from outside—rather than an independent awareness.
What tathatā-dharma calls "free from the mark of mental grasping" is especially powerful in the contemporary context: it reminds us that the "I" should not merely be determined by various conditions (clicks, recommendations, interactions)—it can itself be something undetermined, equal, aware.
Neuroscience has a related finding (though its limits must be noted): when a person enters meditation or a state of high concentration, activity in the default mode network (DMN) decreases—a network usually associated with "self-referential thinking" and "rumination." This means that in certain states, the "I" temporarily steps back, making room for a broader, quieter awareness.
But the neuroscientific finding is not the same as a verification of the Buddhadharma. What the Buddhadharma calls "真如" is an ontological neither-increasing-nor-diminishing; what neuroscience describes is a change in patterns of brain activity. One is about "what it is," the other about "what it does." The two are related, but not identical—neuroscience can describe mechanisms, but it cannot touch that "changeless" substance.
4. Common Misreadings and Clarifications
Misreading One: "真如" Is Some Entity, God, or First Cause
Many people, hearing "真如," think of "the substance of the universe," "the highest entity," "the creator." This turns tathatā into a "thing."
But the scriptures repeatedly stress: "真如" is "free from the mark of mental grasping"—it is not an object that the mind can seize; it cannot be thought, spoken, or pointed to as some thing. It is more like "the condition itself that allows all things to appear"—you cannot say what it is, but you cannot say it is not.
A more accurate analogy: it is like "space." Space is not an object, yet all things appear within space; space cannot be grasped, yet apart from space there are no things. Tathatā is like this—it is "the space of true reality"; every dharma is immediately it.
Misreading Two: "真如" Equals "Everything Is True," So Anything Goes
This reading turns tathatā into a nihilistic "permit"—since all dharmas are tathatā, murder and arson are also tathatā, so one may do them.
But the "true" of tathatā is not the "true" of "anything holds"; it is the "true" of "as it really is"—the "true" of things being as they originally are, un-distortable.
On the contrary, precisely because tathatā is without change and ultimately equal, causality is real, good and evil have their retributions, and cultivation versus non-cultivation makes a difference. If nothing had "truth," then cultivation itself would become false. Tathatā established, therefore causality is established; causality established, therefore cultivation is established. This is a key argument in the Mahāyāna.
Misreading Three: Setting "真如" and "空" (śūnyatā, "emptiness") in Opposition
"空" and "真如," in many Mahāyāna scriptures and treatises, are two aspects of the same true reality. Emptiness is spoken from the side of "breaking"—breaking ordinary beings' attachment to substantial existence; tathatā is spoken from the side of "establishing"—revealing that originally pure reality.
The *Heart Sūtra* says "emptiness is form, form is emptiness"—emptiness and form interpenetrate; likewise, tathatā and emptiness interpenetrate. The *Mahāparinirvāṇa-sūtra* (《大般涅槃经》) explicitly states that "emptiness" is another name for "the principle of the Tathāgata's tathatā." "Emptiness" and "tathatā" are two aspects of the same thing, not two things.
Misreading Four: Equating "真如法" with Some Mystical Experience or Mystical State
Many people pursue "seeing tathatā" or "realizing tathatā," treating it as a special enlightenment experience.
But as a teaching, tathatā-dharma is a path; as substance, it is the present original. It does not require you to reach some special state to touch it. Every moment, when you return from being carried by the surface to that awareness which can see the surface—at that moment, you are already in the present of tathatā-dharma.
The Chan school often says "the ordinary mind is the Way" and "walking, standing, sitting, lying down are all practice"—this is what it means. It is not leaving the everyday to look for tathatā, but illuminating tathatā within the everyday.
Misreading Five: Understanding "Having Tathatā as Substance" as "Tathatā Is Behind Dharmas" or "Dharmas Are the Surface, Tathatā Is the Inner"
This dualizes tathatā-dharma, turning it into a hierarchical "substance-phenomenon" structure.
But what the *Awakening of Faith* says about tathatā is "the one mind itself is tathatā"—there is no tathatā above the mind, no tathatā outside the mind; the mind in its very substance is tathatā. So tathatā is not behind dharmas, not beneath dharmas, not outside dharmas. Tathatā and dharmas are one, not two.
Finally, let us repeat the definition once more, as a closing:
真如法 (tathatā-dharma) is those dharmas that have tathatā as their substance, or that take tathatā as their object of expression.
It refers both to the original of all dharmas—mountains, rivers, the great earth, grasses, trees, tiles and stones, the present thought-moment, all being the very substance of tathatā—and to those teachings and practices that point to this original: scriptures and treatises, contemplative methods, precepts, śamatha-vipaśyanā—all guiding us back to that original.
When you can be unlabeled by others' definitions, un-hijacked by your own emotions, unshaped by algorithmic feeds, unstuck by your own concepts—what is revealed at that moment is the single illumination of tathatā-dharma in the present.
It is not asking you to go somewhere, not asking you to become something; only—return to that which is thus as it is.