The student Śaunaka asks: by knowing what is everything known? The answer begins with a distinction that restructures the entire inquiry — all knowledge except one leaves the knower unchanged. One knowledge transforms the knower by dissolving the distinction between knower and known.
The opening question — by knowing what is everything known? — sounds strange at first. You cannot know everything by knowing one thing. There will always be more things to know. The question is not asking about completeness of information. It is asking about the one knowledge that changes everything else — the knowledge that, when you have it, reveals the ground from which everything arises.
The lower knowledge is all ordinary learning: the four Vedas, grammar, astronomy, ritual — everything that can be taught and transmitted, everything that produces information. It is vast, it is honourable, and it is not enough. Verse 1.1.5 lists eight branches. This is not dismissing them — it is being precise about what they can and cannot give.
The higher knowledge (parā vidyā) is defined in a single clause: that by which the Imperishable is known. Not information about the Imperishable — recognition of it. There is a difference. Information about Brahman leaves you exactly where you were, plus some concepts. Recognition of Brahman is liberation.
The framing is important: this distinction is attributed to those who know Brahman (brahmavidaḥ) — not to scholars, not to those with vast learning, but specifically to those who have the higher knowledge. They are the ones qualified to make the distinction, because they know from the inside what the higher knowledge is and what the lower knowledge lacks.
Verse 1.1.5 lists all eight traditional branches of Vedic learning. This is not a dismissal of learning — it is precision. The text is not saying learning is useless; it is saying learning is aparā (lower) in a specific technical sense: it operates at the level of objects. All eight branches, however mastered, leave the student knowing things about the world. None of them deliver the one knowledge that changes the knower's relationship to Brahman.
The higher knowledge is defined by its object: akṣara (the Imperishable). This term, used throughout the Muṇḍaka (and at Bṛhadāraṇyaka 3.8 in Yājñavalkya's teaching to Gārgī), is one of the Upanishads' technical names for Brahman — specifically Brahman in its aspect as the unchanging ground that cannot be diminished, worn away, or dissolved. All impermanent things arise from it and return into it. The question is: can this be known? And in what sense of 'known'?
Śaṅkara's answer in the Muṇḍaka Bhāṣya: it cannot be known as an object (viṣaya), because it is the knowing subject. But it can be recognised — by recognising that what you are is what everything else also is, at the ground. This recognition is parā vidyā.
The distinction between parā and aparā vidyā is not merely about subject matter. It is about the structural difference between object-knowledge and self-knowledge. All aparā vidyā, however vast, operates by the subject knowing objects. The knower and the known remain distinct. This structure — subject knowing objects — is itself the problem, because it presupposes the separation of knower from known. All bondage in Advaita is analysable as this separation: the self (jīva) experiences itself as a limited subject in a world of objects. Aparā vidyā adds objects to this experience; it never addresses the structure of the experience itself.
Parā vidyā — knowledge of the Imperishable — is knowledge that eliminates the knower–known division itself. This is why Śaṅkara says that liberation is by knowledge alone (jñānamātra): not by any accumulation of object-knowledge, however extensive, but by the specific recognition that the knower is Brahman. This recognition does not add a new object — it dissolves the misidentification of the self with the limited subject-pole.
The conversation opener — Śaunaka approaches Aṅgiras and asks kasmin nu bhagavo vijñāte sarvam idaṃ vijñātaṃ bhavet — by knowing what, revered one, is all this known? — is not a question about omniscience. It is a question about Brahman-knowledge as the ground of all knowledge. Śaṅkara reads it: if Brahman is the ground of all existence, then knowing Brahman is knowing the ground — and in that ground, everything arises. Not that you then know each thing individually; but that the appearance of a world of separate things making their claims on you no longer binds.