Within the Vaisheshika vision of reality, atomism applies strictly to the material world, not to the soul. Atoms (paramāṇu) constitute bodies, sense organs, and other physical entities, but the soul or self (ātman) is recognized as a distinct kind of substance (dravya), not composed of atoms and not reducible to them. It is eternal, partless, and indivisible, standing apart from the flux of atomic combinations and separations. In this way, Vaisheshika upholds a robust realism about both matter and self, yet assigns them different ontological statuses.

The soul is conceived as a plurality of individual selves rather than a single universal Self. Each living being has its own ātman, numerically distinct and enduring through successive embodiments. The body–mind complex is formed from atoms, while the soul is related to this complex through conjunction, without ever becoming identical with it. Birth and death mark changes in the soul’s association with particular bodies, not any alteration in the soul’s own eternal nature.

Conscious experience is explained by treating the soul as the substratum (āśraya) of specific qualities (guṇa). Knowledge, pleasure, pain, desire, aversion, volition, merit, and demerit inhere in the soul, but arise only through its association with mind and senses and are shaped by past actions (karma). The soul itself is not inherently conscious in isolation; consciousness appears when the appropriate connections and conditions obtain. Thus, the inner life of a person is grounded in a real, enduring subject, yet is also conditioned by its karmic history and its linkage to an atomic body.

Liberation (mokṣa) is understood as the complete dissociation of the soul from those contingent qualities and from the bondage created by karma. In that state, the soul abides in its pure substantial nature, free from suffering and from the cycle of rebirth. It no longer manifests the changing stream of cognitions and emotions that characterize embodied existence. Vaisheshika’s atomistic realism thus accommodates a vision of the self as both metaphysically independent of matter and yet deeply implicated in the moral and experiential order that unfolds through its association with an atomic world.