Tat tvam asi: three readings

The four words that split Vedanta

There is a sentence in the Chandogya Upanishad, one of the oldest of the Upanishads, that a father says to his son. The father is Uddalaka Aruni. The son is Svetaketu, home from twelve years of study and a little too pleased with himself. Uddalaka takes him down through one homely image after another. Clay, and everything made of clay. The seed of a great tree, split open to show nothing visible inside. Salt, stirred into water until it vanishes from sight but waits on the tongue at every sip. After each one he comes back to the same refrain. Max Müller’s 1879 rendering closes it this way:

स आत्मा तत्त्वमसि श्वेतकेतो

sa ātmā tat tvam asi śvetaketo

“That which is the subtile essence, in it all that exists has its self. It is the True. It is the Self, and thou, O Svetaketu, art it.”

Chāndogya Upaniṣad 6.8.7 #

The Sanskrit of that last clause is tat tvam asi. Three words in the text, four in the usual English: “that thou art.” Uddalaka repeats it nine times. It became one of the mahavakyas, the great sayings the later tradition treated as the load-bearing statements of the Upanishads.

And then something remarkable happened. The three greatest philosophers of Vedanta read that one sentence and disagreed completely about what it says. Not on a detail. On everything. One said it means the Self and the absolute are identical. One said it means they are inseparable yet distinct. One said it means they are eternally different, and to make the point he changed where one letter falls. Each man defended his reading from the same scripture, with rigorous grammar and a long chain of supporting verses. The argument has run for more than a thousand years and is not settled now.

This is the story of how four words became three universes.

The sentence itself, before anyone reads it

It helps to slow down on the bare words. Tat, “that,” points to the subtle essence Uddalaka has been circling, the one reality at the root of everything. Tvam, “thou,” is Svetaketu, the listening self. Asi, “art,” is the link between them. On its face the sentence sets the cosmic principle and the individual person side by side and joins them with the verb “to be.”

Everything turns on how strong that “is” is. The English “is” can mean strict identity, as in “the morning star is the evening star.” It can mean belonging or predication, as in “the cloth is white.” It can mean dependence, as in “the reflection is the sun” in a loose way of speaking. Sanskrit grammar has precise tools for sorting these, and each school reaches for a different tool. The disagreement looks theological from a distance. Up close, a great deal of it is grammar.

One more thing to hold. The same Upanishadic corpus also says aham brahmasmi, “I am Brahman” (Brihadaranyaka 1.4.10), and neti neti, “not this, not this” (Brihadaranyaka 2.3.6). A reading of tat tvam asi has to live in a library where those sentences also sit. Which verses you treat as the key that unlocks the rest decides much of the outcome before you have parsed a single word.

Shankara: the words drop away

Adi Shankara, the systematizer of Advaita Vedanta, reads tat tvam asi as a statement of identity, pure and entire. The Self that you call “I,” once you strip away the body, the senses, the moving stream of thoughts, is atman, and atman is Brahman. There is one reality, and your innermost awareness is it. The teaching the father gives the son is the dissolving of a mistake about who the son already is.

The obvious objection arrives at once. “That” and “thou” plainly differ. That is the all-knowing, all-causing ground of the cosmos. Thou is a limited, embodied, often confused person. How can a sentence equate them without talking nonsense?

Shankara answers with a method called lakshana, implication. When a sentence’s literal sense is impossible, you keep what the words can jointly point to and let go of what blocks the pointing. The standard example is everyday. Someone says, “that is that Devadatta,” meaning the man you met years ago in another town is the man standing here now. Taken literally the sentence is absurd, since the past Devadatta and the present one differ in place and time. What the speaker means is the one person underneath both appearances. You drop the contradictory features, place and time, and keep the identical core.

Applied to tat tvam asi, this is the move the Advaita tradition calls bhaga-tyaga-lakshana, implication by giving up a part. From “that” you set aside the contingent role of cosmic creator and ruler. From “thou” you set aside the contingent fact of limitation and embodiment. What remains on each side is the same thing: pure, unbounded consciousness. The words that seemed to separate the two terms fall away, and the bare awareness they both name is seen to be one. The sentence does not equate a small thing with a big thing. It removes the additions that made them look like two.

For Shankara this is why liberation comes through knowledge. If your bondage is a case of mistaken identity, then the cure is correct seeing, the direct recognition that you were never separate from the one reality. The father is not promising the son a future merger. He is telling him a present fact he has overlooked. You can follow this thread further in What is Advaita Vedanta? and in the foundations piece on atman and Brahman.

Ramanuja: two names for one Lord

Ramanuja, the great teacher of Vishishtadvaita, “qualified non-dualism,” finds the strict-identity reading both grammatically loose and spiritually cold. His objection is exact. If tat tvam asi meant bare identity, then the two words would be redundant, and the sentence would erase the very devotee it is spoken to. He offers a different rule of reading, and it is the heart of his system: samanadhikaranya, coordinate predication.

Coordinate predication is ordinary in language. “The blue lotus” uses two words, “blue” and “lotus,” that refer to one object through two aspects. They share a single locus while naming different things about it. Ramanuja says tat tvam asi works the same way. “That” names the supreme Lord as the cause and ground of the universe. “Thou” names the same Lord as the inner Self of Svetaketu. The sentence does not collapse the soul into the absolute. It declares that the one God is present at both ends, as the world’s source and as the indwelling self of this person.

This rests on Ramanuja’s signature relation, sharira-shariri bhava, the body-and-soul relation. For him the entire universe of conscious beings and unconscious matter is the body of God, and God is its inner self, the way your self animates and rules your body while remaining distinct from it. So when the text says “thou art that,” it means: you, the soul, are real, distinct, and your own, and you are at every moment the body of the Lord who is your innermost self. You belong to him as a part belongs to the whole that gives it being. Identity and difference are both preserved, which is exactly what “qualified non-dualism” names.

The pastoral weight of this is large. The soul is not an illusion to be seen through. It is a real self in a real and permanent relationship of dependence and love with a personal God. Liberation is the soul coming to live consciously in that relationship. Ramanuja’s life and system are set out in the biography of Ramanuja; the school as a whole sits beside its rivals in What is Vedanta?.

Madhva: thou art not that

Madhva, the founder of Dvaita, “dualism,” reads the same sentence and arrives at the opposite of Shankara. For Madhva the deepest truth of reality is difference, organised in what his school calls the pancha-bheda, the five eternal distinctions: between God and soul, between God and matter, between one soul and another, between soul and matter, and between one material thing and another. These differences are real and they never dissolve. The soul depends on the Lord utterly, reflects him, is sustained by him, and is forever other than him.

So what does Madhva do with a sentence that seems to say “thou art that”? Two things, and they are bold.

First, he reads it in context and refuses to let one clause overrule the whole teaching. The surrounding Upanishadic material, he argues, is shot through with the language of difference, of the soul as dependent and the Lord as the independent reality. A single phrase cannot be made to cancel the drift of the entire text. On this reading “thou art that” means the soul is of that, belongs to that, draws its whole being from that, in the way one might say “you are His.” The dependence is total; the identity is denied.

Second, and more startling, Madhva offers a grammatical reparsing. In Sanskrit the words run together by sandhi, the rules that fuse sounds at word-boundaries. The clause sits after a word ending in a vowel, and Madhva resolves the junction so that an a attaches to the front of tat. The result is atat tvam asi: “thou art not that.” Where Advaita drops words to reach identity, Madhva splits the sound-stream to reach difference. Both sides agree the surface string is the same. They disagree, at the level of phonology, about what the surface string contains.

Advaitins reject the parsing as forced and contrary to the obvious sense. Madhva’s tradition, through commentators like Jayatirtha, defends it as faithful to the text taken whole. You do not have to decide who is right to feel the audacity of it: a school of philosophy turning, in part, on where a single vowel falls. Madhva’s life and the larger shape of his thought are in the biography of Madhva.

Why the same words can carry three worlds

Step back and the disagreement stops looking like stubbornness and starts looking like method. Each school reads tat tvam asi inside a different frame, and the frame does most of the work.

The first variable is which verses are decisive. Treat the identity statements as the key and the difference statements as provisional, and you get Shankara. Treat them as mutually qualifying, each true in its register, and you get Ramanuja. Treat the difference statements as decisive and the identity language as dependence, and you get Madhva. None of the three ignores the inconvenient verses. They rank them differently.

The second variable is grammar. Shankara reaches for lakshana to set aside the literal contrast. Ramanuja reaches for samanadhikaranya to keep two real terms pointing at one locus. Madhva reaches for sandhi-resolution to change what the sentence even says. These are not rhetorical tricks. They are recognized tools of Sanskrit interpretation, and each is being used in good faith.

The third variable is what counts as the plain sense. Is the obvious meaning the one a grammarian reaches after applying the rules, or the one a devotee feels when addressed by name? The schools answer differently, and their answers shape everything downstream, including whether the path home is mainly knowledge or mainly love.

There is a tendency, in popular writing, to flatten all this into “Hinduism teaches you are God.” The sentence will not bear that weight. What it actually anchors is one of the most demanding conversations in the history of philosophy, three first-rate minds reading one line of scripture with total rigour and reaching three irreconcilable conclusions, each able to defend itself from the text. The six schools that frame this whole debate are surveyed in What are the six darshanas?, and the idea of a “great saying” itself is unpacked under the term mahavakya.

What the disagreement is for

It would be easy to read this as a thousand-year deadlock, three camps talking past each other. It is better read as a tradition taking a single sentence seriously enough to argue about it forever. The Upanishad gives no commentary of its own. It says the words and moves on, trusting that they will be lived with. Shankara, Ramanuja, and Madhva are three ways of living with them: as a fact to be realized, as a relationship to be entered, as a dependence to be honoured.

A reader does not have to choose a winner to be changed by the question. The next time the four words appear, stripped of their school colours, it is worth sitting where Svetaketu sat and asking what it would mean if any one of the three were true of you. That is, in the end, what the father was asking the son.