Viveka (discrimination between the real and the unreal) and Vairāgya (dispassion toward all that is impermanent) — the two foundational qualifications for the inquiry into Brahman in Advaita Vedanta.
Before the inquiry into Brahman can begin in earnest, the Advaita tradition identifies two foundational orientations the student needs. Not as prerequisites to be perfected before starting — but as qualities that make the inquiry possible and that deepen through the inquiry.
Viveka — discrimination. Specifically: the ability to distinguish between what is real and what is not, between what is permanent and what is impermanent, between what is the self and what is not-self. Most people treat impermanent things as though they were permanent, and treat the body-mind complex as though it were the self. Viveka is the developing capacity to see through these confusions — not through willpower but through honest, sustained looking.
Vairāgya — dispassion. Not the suppression of desire. Not indifference or coldness. The natural loosening of the grip of desire for objects that the person has recognised as impermanent and incapable of delivering the fulfilment they seem to promise. Vairāgya follows naturally from viveka: when you clearly see that a particular food, relationship, achievement, or experience cannot give you what you are looking for, the craving for it subsides. Not through renunciation as an act of will but through recognition.
Together, viveka and vairāgya prepare the mind for the teaching — making it capable of hearing the Mahāvākya without immediately translating it into just another object of desire or another fact to be filed away.
Śaṅkara opens the Vivekacūḍāmaṇi with four qualifications (sādhanacatuṣṭaya) for the student of Vedanta: (1) nityānityavastuviveka — discrimination between what is eternal and what is not; (2) ihāmutrārthabhoravairāgya — dispassion toward enjoyment in this world and the next; (3) śamādi ṣaṭkasampatti — the sixfold inner wealth (calm, restraint, withdrawal, endurance, concentration, faith); (4) mumukṣutva — the burning desire for liberation. These four together constitute what the tradition calls adhikāra — qualification, fitness — for Vedantic inquiry. Without them, the teaching is heard as information rather than as pointing at something to be recognised.
Bṛhadāraṇyaka 4.4.23 states: taṃ vidyāt kṣīṇa eṣa brahmaloka iti — having known this, having become calm, restrained, withdrawn, patient, concentrated, seeing the self in the self alone, one sees Brahman everywhere. The verse encodes the same qualities as Śaṅkara's fourfold preparation: the qualities are not the goal but the conditions for the seeing.
The relationship between viveka-vairāgya and liberation raises an important question in Advaita: if liberation is by knowledge alone, what role do character qualities play? Śaṅkara's answer in the Brahmasūtra Bhāṣya: karma and upāsanā (ritual and contemplation) produce citta-śuddhi (purification of mind) — not liberation itself, but the mental clarity in which the liberating knowledge can arise. Viveka and vairāgya are indicators of citta-śuddhi. The student who has them is not therefore liberated; they are mentally capable of receiving and assimilating the teaching. The teaching itself — śravaṇa, manana, nididhyāsana — does the remainder.
Sources: Śaṅkara, Vivekacūḍāmaṇi 17–31, trans. Swami Madhusudanasaraswati (Advaita Ashrama, 2009); Bṛhadāraṇyaka Upaniṣad 4.4.23, trans. Swami Mādhavānanda (Advaita Ashrama, 2010).