The Lamp of Non-Knowledge Theory: Sixty-Four

When we observe any object or event, we typically identify it as "something"—this is good, this is bad, this is beautiful, this is mine, and so on. All these names, concepts, comparisons, preferences and aversions—all are constructions within consciousness. But reality itself is not confined within these boundaries. When the mind releases all interpretations, reactions, and language to see the world as it is, just as it is, the pure understanding that emerges is tathatā.

Tathatā and Śūnyatā: Emptiness (śūnyatā) and suchness (tathatā)—these two concepts are complementary to each other. Emptiness says, "No entity has its own inherent, self-evident essence; everything is interdependent." On the other hand, suchness says, "This interdependent, ever-changing reality is complete, just as it is, exactly so." That is, emptiness is the analytical aspect of reality—it breaks down the structure of illusion, dissolving the division between "I" and "other." And suchness is the peaceful presence after that dissolution—where there is no longer any division, simply this being. Emptiness shows that "nothing is permanent"; suchness allows us to feel that "what is, is complete in itself."

Tathatā in Mahāyāna Sūtras: Various Mahāyāna sūtras have explained suchness. The Prajñāpāramitā Sūtra states, "What is empty, that is suchness; what is suchness, that is nirvāṇa." That is, suchness is not a second reality, but that very emptiness—which now awakens not as thought, but as direct experience. In the Avataṃsaka Sūtra, suchness is called the nature of dharmadhātu—an indivisible consciousness where everything appears in interconnection with everything else. The Laṅkāvatāra Sūtra states, "Suchness manifests in that consciousness where the division between subject and object dissolves."

Tathatā at the Level of Experience: Suchness is not a concept; it is experience. When the mind becomes peaceful, non-judgmental, and desireless, reality expresses itself as itself—without the need for name or form. In this experience, seeing and being-seen become one; the division between existence and non-existence disappears. For the bodhisattva, this is the ultimate realization—where they seek to attain nothing, because they understand that what is, is sufficient. This "being as it is"—this is suchness.

Tathatā in the Realm of Philosophy: Suchness signifies that there is no separate "ultimate being"—there is only this complete suchness, which manifests itself spontaneously in every moment. It is neither God, nor any substance, nor any nihilistic emptiness—but a silent, all-pervading presence. If you try to name it, it vanishes; you can only "see" it when the very act of "seeing" ceases.

At the Level of Consciousness: When knowledge and compassion merge into each other, when no "I" remains at the center of experience, then suchness manifests with its transparent radiance. This is no supernatural reality—it exists here, now, within every event. In your breath, in the swaying of leaves, in the sound of rain—suchness is manifesting completely in everything.

Suchness means "being as it is"—neither good nor bad; neither empty nor full; simply so, silent, unwavering, undivided presence. Emptiness says: nothing is separate. Suchness says: yet everything is complete, just as it is. Where conflict ceases, where language fails, where mind no longer divides—there is suchness.

Brahman and Tathatā: Consciousness and 'Suchness'—Two Horizons—Advaita Vedanta and Mahāyāna Buddhism—two great peaks of Indian philosophy. Both paths seek ultimate reality—such a truth that is beyond all conflict, limitation, language, and thought. One calls it Brahman, the other calls it suchness. The words differ, but the direction of silence is one.

The Starting Point of Perspectives: Advaita Vedanta begins from the Self; Buddha begins from non-self. Advaita says—"The Self or consciousness is eternal and indivisible, that Self is Brahman." Buddhism says—"Where there is no such thing as self, there is unattached consciousness or suchness." In Advaita's language, the foundation of everything is one eternal being, while Mahāyāna says there is no being—but in that non-being itself lies completion.

Brahman—The Supreme Unity of Consciousness: In Advaita Vedanta, Brahman is the only ultimate truth. It is formless, beyond attributes, eternal, and self-manifesting as consciousness. Everything emerges from Brahman and dissolves back into Brahman. Brahman is called sat-cit-ānanda—the unity of existence, consciousness, and bliss. When ignorance is erased, one knows—individual soul, world, and God—there is no difference among these three. In Śaṅkarācārya's words, "Brahman alone is real; all else is name and form."

Tathatā—The Suchness of Reality ('Such—remaining as it is'—quality): In Mahāyāna Buddhist philosophy, suchness means "remaining just as it is"—such a reality that is not covered by any name, concept, or perspective. It is the inner revelation of emptiness—where everything is dependent, interdependent, yet perfect.

Suchness is not a separate entity; it is that unconditional presence that shines through all events. Buddha said, "Suchness is that state where the division of name and form disappears." It is not an object of consciousness, but consciousness itself—yet without any sense of "I".

Conceptual Difference in Reality: Advaita Vedanta sees reality as "consciousness-being"; Buddhist philosophy sees suchness as the "unconditional suchness of consciousness." Advaita establishes one undivided Self; Buddhism erases the very concept of self. In Advaita it is said, "The Self is infinite as consciousness"; Buddhism says, "Consciousness is infinite, but there is no self in it." Advaita's Brahman is a constant being—which is called eternal, real, consciousness, bliss. Buddhism's suchness is not constant—it is impermanent, interdependent, yet eternally complete. Advaita says, "Everything is the manifestation of consciousness." Buddhism says, "Everything is the manifestation of interdependence."

Limits of Language and Thought: Both paths agree—ultimate truth cannot be expressed in language. The Upaniṣads state, "yato vāco nivartante, aprāpya manasā saha" (Taittirīya Upaniṣad, Brahmānandavallī, 2.4.1). That is, Brahman or ultimate truth is such a reality that cannot be reached by thought or language. Mahāyāna sūtras state, "Where there is no difference between name and form, there is suchness." Language, concepts, logic—all are relative; ultimate truth exists before them, inexpressible through them. Therefore Brahman is "ineffable," suchness is "beyond expressibility." (I will explain this shortly.)

Similarity at the Level of Experience: When the mind becomes completely silent, when "I" and "other" merge, when experiencer and experience become one—then the silent presence that awakens, Advaita calls Brahman, Buddhism calls suchness. One says, "I am Brahman." The other says, "The very concept of 'I' does not exist, there is just 'being'." But both experiences are one—one undivided consciousness, one peaceful silence, one limitless freedom.

The Context of Liberation and Nirvāṇa: In Advaita, liberation means Self-knowledge—"I am Brahman." In Buddhism, nirvāṇa means the cessation of concepts—"I am not." Two paths approach from opposite directions and meet at one point. In Advaita, knowledge erases ignorance; in Buddhism, wisdom erases attachment and views. The result is the same—fearlessness, non-attachment, and complete peace.

Unity of Consciousness and Suchness: Brahman is the complete manifestation of consciousness; suchness is the unconditional suchness of that consciousness. One says, "Everything is I." The other says, "Nothing is separate." Both say—no conflict, no division, only this. Finally both traditions merge in the same silent truth, where language stops, thought becomes still, and what remains is the complete transparency of consciousness.

Brahman and suchness—both are manifestations of non-dual consciousness. Brahman is the self-manifestation of that consciousness; suchness is the selfless suchness of that consciousness. Brahman says, "I am." Suchness says, "There is—but there is no I." Both lead toward an ineffable presence where all views, concepts, conflicts, names, and forms dissolve. There remains only silence—such silence that is not emptiness, but the transparent foundation of everything, where one sees—Brahman is suchness, suchness is Brahman.

Brahman's ineffability and emptiness's inexpressibility—two different paths, but advancing toward one silent truth.

At the Frontier of Language and Silence: Human intellect and language seek to grasp reality; they name the world, divide it, define it. But at a certain point language recognizes its own limits—the reality it approaches can no longer be captured in words. Both Advaita Vedanta and Mahāyāna Buddhist philosophy come to stand at that frontier. One says, "Brahman is ineffable"—the other says, "Emptiness is beyond expression." Same truth, two languages; same silence, entry from two sides.

Brahman's Ineffability: Brahman is not a concept, not an object. It is that consciousness within which all concepts, objects, and experiences occur. Whatever is said is limited, relative—and Brahman is that infinite silence before that limit. When the Upaniṣads say—"yato vāco nivartante, aprāpya manasā saha"—they acknowledge that however subtle language may be, it cannot reach Brahman, because language is itself His manifestation. Brahman cannot be spoken, but He is the source of speech.

What consciousness speaks, what intellect thinks, what mind perceives—all happens within Brahman, yet He cannot be grasped by any thought. This is why the Upaniṣads' bold declaration: "neti neti"—not this, not that—because however much you attribute qualities, Brahman transcends even those qualities. He is beyond attributes, yet not lifeless; He is infinite, yet radiant in stillness.

Emptiness's Inexpressibility: In Nāgārjuna and the Prajñāpāramitā sūtras, emptiness is an inconceivable region of language. Emptiness doesn't mean an empty void, but such a reality where all concepts, names, divisions, the conflict of existence-nonexistence dissolve. Nāgārjuna's tetralemma logic demonstrates—any object—'neither exists'; 'nor doesn't exist'; 'neither both exists and doesn't exist'; 'nor beyond both existence and non-existence'—that is, emptiness is ineffable on all four sides of language.

Emptiness is not some "state" that you can grasp as a concept; if you grasp it, you will be wrong. Because the act of grasping creates duality—grasper and grasped, subject and object. In emptiness this very division disappears. Therefore Nāgārjuna warns—"Whoever holds emptiness as a viewpoint falls back into illusion." This is why emptiness is inexpressible—the very attempt to describe it distorts it.

The Identical Heart of Two Philosophies: Advaita's Brahman and Madhyamaka's emptiness, both have the same nature—non-dual, infinite, inconceivable, beyond language. Vedanta says—"Brahman is everywhere, but cannot be seen, because He is the consciousness of seeing itself." Buddhism says—"Emptiness is everywhere, but cannot be grasped, because it transcends all processes of grasping." Both teach—when mind stops, when language becomes still, what remains is the ultimate truth.

However, Advaita calls that experience the self-manifestation of consciousness, while Buddhism calls it—non-dual suchness—tathatā. Advaita's Brahman is the complete knowledge of "I am"; Buddhism's emptiness is the complete peace of "I am not"; but once both "I" and "not" cease, what remains is the same radiant emptiness—where there is—neither self nor non-self, only one silent presence.

Language's Inability and the Call of Understanding: Both these paths say—to understand, don't think, but know in silence. Because language is the child of duality; and truth is always non-dual. Brahman-knowledge comes when even the desire to know stops. The realization of emptiness occurs when even the mind that seeks to realize something is exhausted. There is silence there, but not dead; it is the complete awakening of consciousness.