In Sāṁkhya, Purusha is understood as pure consciousness—eternal, unchanging, and without qualities. It does not act, create, or undergo modification; rather, it remains the silent witness (sākṣin) of all mental and bodily processes. As the locus of awareness, it illuminates experiences but is never itself affected by pleasure, pain, or change. Even when bound up with the movements of mind and body, Purusha in its essential nature remains untouched and inactive (akartā).

Purusha’s presence plays a crucial role in the unfolding of Prakriti. Though it does not will, initiate, or directly participate in activity, its mere proximity disturbs the equilibrium of Prakriti’s guṇas and sets cosmic evolution into motion. In this sense, it functions like a catalyst: necessary for manifestation, yet never altered by the process it enables. Prakriti provides the dynamic, creative aspect of reality, while Purusha provides the principle of consciousness that allows that activity to be known.

On the level of individual existence, Sāṁkhya affirms a plurality of Purushas, each serving as an individual center of consciousness. The diversity of experiences, bodies, and mental states is accounted for by this multiplicity, even though each Purusha remains intrinsically the same kind of pure awareness. Through association and apparent identification with Prakriti’s modifications—mind, senses, and body—Purusha seems to experience bondage, pleasure, and pain, though in truth it remains fundamentally unaffected.

Liberation (kaivalya) is described as the complete discernment of the radical distinction between Purusha and Prakriti. Through discriminative knowledge (viveka), Purusha’s true nature as isolated, pure consciousness is recognized, and the false identification with the evolutes of Prakriti falls away. When this clear seeing arises, Purusha abides in its own isolated state, no longer entangled in the play of the guṇas, while Prakriti ceases its activity with respect to that liberated Purusha.