Kaivalya Pada 4.31 — The Infinity of Knowledge When the Veils Fall

Then, when all the veiling impurities are gone, the knowledge becomes infinite, and what remains to be known is little.

The words of the sutra

The verse is built from a dense chain of compounds that reward slow unpacking. Tadā means simply "then" — a temporal marker that points back to the cloud of virtue (dharma-megha-samādhi) and the dropping-away of affliction and binding action described in the preceding sutras. Patañjali uses it to mark a threshold: only when that prior condition is met does what follows hold true. The great compound at the heart of the line is sarva-āvaraṇa-mala-apetasya, an adjective qualifying the knowledge to come. Sarva is "all"; āvaraṇa, from the root vṛ, "to cover, to enclose," means a "veiling" or "covering"; mala is "impurity, stain, dross"; and apeta, from apa-i, "to go away," means "departed, fallen off." The whole reads: "of one from whom all the veiling impurities have departed."

The subject of that long adjective is jñānasya, "of the knowledge" — the genitive showing whose infinitude is being asserted. Ānantyāt is the ablative of ānantya, "infinitude, endlessness," itself from an-anta, "without end"; the ablative carries a causal force, "because of the infinitude." And the predicate is the terse jñeyam alpam: jñeya, the gerundive of jñā, "to know," meaning "that which is to be known, the knowable"; alpam, "little, scant, small." Rendered closely: "then, for one whose every veiling impurity has fallen away, because of the infinitude of knowledge, the knowable is little."

What the sutra asserts

The claim is at once simple and startling. Once the coverings are gone, knowledge becomes infinite; and against an infinite knowing, whatever remains to be known shows up as almost nothing. The grammar is exact about the relationship: the smallness of the knowable is not an independent fact but a consequence (ablative ānantyāt) of the boundlessness of the knowing. It is a proportion. When the numerator of knowing grows without limit, the residue of the unknown shrinks toward the negligible.

Notice that Patañjali frames the whole event as subtraction, not addition. He does not say knowledge is gained, acquired, or built up; he says coverings depart. The implication, carried by the imagery of āvaraṇa and mala, is that knowing is the native condition of consciousness — vast and luminous by nature — and that ordinary cognition is that same light obscured. The impurities are the residues of the afflictions (kleśa), the colourings of rajas and tamas, the distortions of a clouded instrument. Remove them and nothing new arrives; the original infinitude simply stands revealed.

The phrase "the knowable is little" is easily misread as a boast of omniscience, as if the sage had memorized the contents of the universe. It is the opposite of a boast. It is the report of one for whom the field of the knowable — however immense it seemed from inside ignorance — has shrunk to insignificance beside the infinitude of the now-uncovered knowing. When the light is unlimited, no dark corner can hide; the unknown, which loomed so large under obscuration, almost vanishes. It is the difference between counting grains of sand by candlelight and seeing the whole shore at dawn.

The place in the pada's argument

This sutra sits in the closing movement of the Kaivalya Pada, the fourth and final book, which gathers the whole work toward liberation. The pada has built an account of mind and its impressions (saṃskāra and vāsanā), of how the seen exists for the seer, of discriminative discernment (viveka-khyāti) and the cloud of virtue that crowns it. Just before this verse, Patañjali has described the cessation of affliction and binding action that the cloud of virtue brings — bondage falling away. This verse gives the luminous obverse of that release: not merely the ending of a burden but the shining-forth of an unlimited knowing.

It functions, then, as the splendour-side of liberation, poised between the negative statement of release that precedes it and the completion of nature's purpose that follows. The very next sutras will turn to nature's side of the story — the guṇas, their task accomplished, ending their sequence of transformation. Read together, the closing verses describe one event from two angles: consciousness uncovered into infinite knowing, and nature falling quiet because there is nothing left for it to do. This verse is the first, the side of light.

How the commentators read it

The classical tradition is unanimous that this knowledge is not the discursive cognition of objects but the radiance of sattva wholly purified of rajas and tamas. Vyāsa, in the foundational Yoga-Bhāṣya, takes the "impurities" to be precisely the obscuring covering of the afflictions and of rajas and tamas upon the mind's sattva; when that covering is gone, the mind's clarity is effectively without limit, and against it the objects still knowable are few. He is careful to keep the infinitude on the side of the illumined mind, not to confuse it with the changeless seer.

Vācaspati Miśra, in his subcommentary the Tattva-vaiśāradī, sharpens the proportional point: he reads the smallness of the knowable as relative and almost figurative — the knowable is "little" the way a firefly is dim beside the sun, not because the world has shrunk but because the illumination has grown immeasurable. Vijñānabhikṣu, with his characteristic theistic and integrative bent, stresses that this near-omniscience belongs to the purified buddhi reflecting consciousness, a borrowed splendour, not an attribute the liberated puruṣa acquires for itself. Bhoja, in the Rāja-mārtaṇḍa, reads the verse compactly as the natural fruit of the cloud of virtue: with the dross of the afflictions burned off, the knowing power meets almost no remaining obstruction. Across these views runs a single thread — the infinitude is the uncovering of what was always there, never an accretion.

The Samkhya frame and a closing image

Beneath the verse lies the Sāṃkhya metaphysics that Patañjali everywhere assumes. Knowing, strictly, belongs to prakṛti in its finest mode — the luminous sattva of the buddhi — while the puruṣa, pure consciousness, only witnesses. So the "infinite knowledge" here is the buddhi at the absolute limit of its clarity, its sattva freed of every taint, mirroring without distortion. This keeps the teaching coherent: the seer does not become a knower of many things; rather the instrument of knowing, perfectly cleared, presents almost the whole of the knowable at once, and the seer simply witnesses that.

What the verse finally evokes is completion rather than conquest. As long as one labours under the veils, knowledge is partial and the unknown is endless and intimidating. The freed one no longer feels that endlessness as a lack, because the faculty by which anything is known has been restored to its limitless nature. Whatever particular objects remain are trivial beside the boundlessness of the seeing itself. The sutra does not promise that we will learn everything; it promises that, cleared of our obscurations, we will discover the unknown was never as vast as our clouding made it seem.

The Upanishadic intuition

The conviction that true knowing is uncovered rather than accumulated is one of the great shared intuitions of contemplative traditions. The Chāndogya Upaniṣad teaches, through the father Uddālaka's instruction to Śvetaketu, that by knowing the one all is known — "that by which the unheard becomes heard, the unthought thought, the unknown known" — not because the knower memorizes everything, but because the ground of all knowing is realized, after which the particulars become "little." The Muṇḍaka Upaniṣad draws the same distinction between higher knowledge (parā vidyā) and lower (aparā vidyā): the higher is that by which the imperishable is grasped, and beside it the encyclopaedic lower learning is small. Patañjali's infinite knowledge with its negligible remainder is the same recognition in the idiom of yoga.

The mirror and the cloud-cleared sky

In Zen and the broader Mahāyāna, awakening is figured as the clearing of clouds from a sky that was always luminous, or the wiping of dust from a mirror that always had the power to reflect. The famous verses attributed to the Northern and Southern schools of Chan dispute the method but agree on the image — the mirror's brightness is native; what is at issue is only the dust. The light is not added; the obscuration is removed, and the boundless capacity to reflect everything is restored. Patañjali's āvaraṇa-mala, the veiling impurities, are exactly that dust, and his infinite post-purification knowing is the mirror's native, unlimited clarity.

The Hermetic light

The Emerald Tablet and the Hermetic stream it seeds carry a kindred image of a light that, once separated from all grossness, "ascends" and penetrates everything, so that "all obscurity" flees before it. The metaphor of impurity removed so that an inner illumination shines without limit recurs wherever knowing is understood as the soul's native condition rather than a possession to be amassed. Across these distant idioms — Upaniṣadic, Buddhist, Hermetic — the structure is the same: knowing is light, ignorance is covering, and liberation is the falling-away of the cover.

There is a familiar smallness to ordinary knowing — we feel surrounded by an immensity of what we do not understand, and each thing learned only reveals more unknown. This sutra inverts that anxious arithmetic. It suggests that the real obstacle is not the size of the unknown but the impurities veiling our capacity to see, and that as those clear, the unknown shrinks — not because we have memorized it but because the light has grown.

The orientation it offers is toward clarity rather than accumulation. Rather than trying to know more and more in a field that only expands, one can attend to removing what clouds perception — bias, agitation, self-interest, fear. A clearer instrument sees more with less effort. Even a partial clearing changes the felt relationship to the unknown: less a wall to be conquered, more a darkness that yields wherever the light reaches. The teaching does not ask us to become omniscient; it asks us to become clear, and trusts that clarity does the rest.

1. Wisdom is not the same as information

This sutra gently challenges the modern equation of wisdom with information. We live amid more accessible knowledge than any prior age, yet the sense of being overwhelmed by the unknown has only grown — more facts have made the field of the knowable feel larger, not smaller. Patañjali points elsewhere: clarity of perception, not quantity of data, is what makes the unknown recede.

2. The clouded instrument sees little

A clouded mind holding vast information still sees little; a cleared mind sees far. Much of what limits us is not missing data but the distortions of attention — stress, bias, divided focus — that veil what is already available to be seen. The bottleneck is the instrument, not the supply.

3. Shift from acquiring to clarifying

The practical relevance is a change of aim: from acquiring to clarifying. In work, study, and self-understanding, removing impediments to clear perception often reveals that what we needed to know was within reach all along, and that the felt enormity of the unknown was partly a function of our own clouding.

4. The unknown shrinks with the light

Reframing the unknown as a function of clouding rather than an objective wall changes one's whole relationship to learning. The goal is not to conquer an ever-expanding frontier but to keep the instrument clean, trusting that wherever the light reaches, the darkness simply yields.