What is Vṛtti?
Vṛtti is Patañjali's term for the movements or modifications of *citta* — the inner cognitive instrument. The [Yoga Sūtras](lexicon:yoga-sutras) define yoga as the cessation of these movements: yogaś citta-vṛtti-[nirodhaḥ](lexicon:nirodha) (I.2). There are five kinds, ranging from right cognition to sleep and memory.
What the term names
Vṛtti derives from the verbal root vṛt — to turn, to revolve, to occur — and carries the image of a whirl or wave: a localised disturbance moving across a substrate broader than itself. Citta is the field; vṛtti is the activity within the field; *nirodha* is the settling of that activity, under which the field becomes available as field rather than as the content that had been mistaken for it. The grammatical structure of yogaś citta-vṛtti-nirodhaḥ carries the whole analysis the curriculum is built on. The metaphysical framework underneath is Sāṃkhya dualism: citta and its vṛttis are both on the *prakṛti* side of the cosmological cut, and the recognition the path is engineered to produce is the *puruṣa* that had been mistaken for them. The eight-limbed *aṣṭāṅga* — *yama*, *niyama*, *āsana*, *prāṇāyāma*, *pratyāhāra*, *dhāraṇā*, *dhyāna*, *samādhi* — is the curriculum under which the settling of the vṛttis becomes reproducible.
The five kinds
Sūtra I.5 — vṛttayaḥ pañcatayyaḥ kliṣṭā-akliṣṭāḥ — declares the vṛttis fivefold and capable of being either kliṣṭa (afflicted, conditioned by *kleśa*) or akliṣṭa (unafflicted). Sūtra I.6 enumerates them as pramāṇa, viparyaya, vikalpa, nidrā and smṛti. Pramāṇa is right cognition: perception, inference, and the testimony of trustworthy sources are its three subspecies. Viparyaya is mis-cognition — the rope seen as a snake, the recognition of something as what it is not. Vikalpa is the verbal-conceptual modification: a cognitive movement whose object is a linguistic construction with no referent in present perception. The Sūtras identify vikalpa as the most occluding of the five, because it produces the most stable counterfeits of perception. Nidrā is sleep — not the absence of vṛtti but its own modification, in which the absence of objects is itself the object. Smṛti is memory: the holding of past vṛttis as material the present activity can rearrange. The fivefold enumeration is exhaustive on the Sūtras' analysis, and the curriculum operates against all five together. The kliṣṭa/akliṣṭa distinction is independent of the typology: any of the five may arise under *kleśa*-shaping or without it, and the path targets the kliṣṭa variants first.
In the index
The vṛtti analysis reaches the corpus through several transmission lines that carry the operative claim — that the moving cognitive content is the workable surface of contemplative practice — without always using the Sanskrit term. Sadhguru's *Inner Engineering: A Yogi's Guide to Joy* and the Inner Engineering Online programme deliver the eight-limbed scaffold the analysis presupposes. The daily kriyā the programme prescribes is operationally a structured engagement with the vṛtti substrate the second sūtra identifies. Sadhguru's longer-form lectures on consciousness and the inner science, his talk on disability and spiritual practice and the talk on unlocking the mind's full potential carry the citta-vṛtti-nirodhaḥ claim into accessible English without naming the aphorism. The operative move across them is the settling of moving cognitive material into a steadier ground that does not require it. Paramahansa Yogananda's *Autobiography of a Yogi* carries the *kriyā-yoga* lineage, in which the eight-limb architecture operates as the substrate the more esoteric energetic techniques presuppose. From the non-dual side, Nisargadatta Maharaj's *I Am That* and Rupert Spira's *Being Aware of Being Aware* describe the recognition the Sūtras call *kaivalya* in metaphysics that have absorbed the prakṛti category into a non-dual frame. Every vṛtti is still of the witness, but the witness is read as one rather than as the irreducible plurality the classical Sūtras posit. Adyashanti's True Meditation gives the clearest English-language instructional sequence for sitting with the vṛttis directly. His *Do Nothing* approaches the same operation from the opposite direction: by setting aside every technique for managing the vṛtti substrate, what does not require a technique to be what it is becomes evident. Spira's longer talk on how the infinite knows the finite carries the same investigation across an hour of patient question and answer.
What the term isn't
Vṛtti is not thought in the contemporary popular sense. The term names a structural category of cognitive activity that includes perception, sleep and memory alongside the discursive-verbal modifications the English word thought usually points at. Reducing the fivefold analysis to its third member (vikalpa) is the standard misreading imported from the popular mindfulness literature. The settling the path is engineered for is not the settling of vikalpa alone. Vṛtti is also not the *kleśas* themselves. Sūtra I.5 distinguishes the kliṣṭa and akliṣṭa species explicitly, and the kleśa inventory of avidyā, asmitā, rāga, dveṣa and abhiniveśa names a deeper affective-cognitive substrate the vṛttis operate inside. And the cessation the Sūtras prescribe is not the cessation of cognitive content. The operative claim of yogaś citta-vṛtti-[nirodhaḥ](lexicon:nirodha) is that the misidentification of the witness with the moving content drops, not that the content stops occurring. The classical commentary is unambiguous: nirodha names the unbinding of the seer from the seen, not the production of a vacant cognitive field.
