The Surangama Sutra draws the line between true and false meditation not by outward form or the presence of unusual experiences, but by whether practice discloses the mind’s fundamental, luminous nature or further entangles it in grasping. True meditation is grounded in insight into the “pure, bright, still” mind, the unchanging awareness that underlies all perceptions and is not produced by conditions. It turns attention inward to recognize this aware essence, often illustrated through the “hearing nature” that remains constant while sounds arise and cease. From this vantage, all meditative states—visions, lights, bliss, powers, or profound quiet—are seen as dependently arisen, empty phenomena that come and go within consciousness. Because their emptiness is understood, they are neither rejected nor clung to, and subject–object duality is gradually seen as illusory.

False meditation, by contrast, is marked by subtle ignorance and self-grasping, even when it appears calm or concentrated. It may rely on techniques that merely suppress thoughts, manipulate mental states, or fixate on particular objects of meditation without insight into their empty nature. When such practice gives rise to special experiences—psychic phenomena, visions, or intense tranquility—these are easily mistaken for final realization, and the practitioner may become proud, rigid, or fascinated with attainment. The Sutra warns that such attachment can lead into the “skandha demons” or “fifty demonic states,” altered conditions of consciousness that divert one from genuine liberation while leaving fundamental ignorance intact. In this way, false meditation remains bound to samsara, because it treats conditioned experiences as ultimate and reinforces the very ego-sense that practice is meant to dissolve.

A further criterion lies in the ethical and transformative effects of practice. True meditation is inseparable from moral purity: it is supported by restraint from harmful actions and by a sincere commitment to clarity of body and mind. When grounded in such integrity and in right understanding, meditation naturally diminishes greed, anger, and delusion, while increasing compassion, fearlessness, and freedom from attachment to any state. False meditation, on the other hand, seeks lofty experiences or powers without this ethical foundation or insight, and thus cannot uproot the underlying tendencies of craving and delusion. For the Surangama Sutra, meditation is authentic only when it steadily reveals the originally pure awareness that is untouched by phenomena, and when it loosens, rather than strengthens, the grip of self-centered clinging.