The Sanlun, or Three Treatise school, stands as the Chinese articulation of Madhyamaka thought, centering its vision on emptiness (śūnyatā) and the Middle Way. All dharmas, including what is conventionally called “self,” are understood to be empty of any inherent, independent essence; they arise only through dependent origination and therefore lack fixed being. This emptiness is not posited as a new metaphysical substance, but as a way of seeing that loosens attachment to any notion of intrinsic reality. In this light, ignorance is nothing other than grasping at inherent existence, and wisdom consists in seeing that such grasping has no real basis. Liberation, then, unfolds as this insight into emptiness undermines attachment and aversion, opening the way to nirvāṇa and to a compassion no longer bound by rigid self–other distinctions.

To articulate this vision, the school makes frequent use of the doctrine of the two truths. On the level of conventional truth, the world of differentiated phenomena, language, and moral causality is acknowledged and engaged; things function, relationships matter, and causal processes operate. On the level of ultimate truth, however, all such phenomena—including the subject that knows them—are recognized as empty of inherent nature. These are not two separate worlds, but two perspectives on the same dependently arisen reality, and the Sanlun tradition is careful to avoid turning either level into an absolute. The Middle Way here is precisely the refusal of the extremes of eternalism and nihilism, affirming neither an unchanging essence nor a denial of causal efficacy and ethical significance.

Methodologically, Sanlun thought is characterized by a radical critique of views. Drawing on Nāgārjuna’s dialectic, it employs rigorous reasoning, often in the form of systematic negation, to expose the contradictions and limitations of any fixed philosophical position. Doctrines, including the doctrine of emptiness itself, are treated as skillful means, like medicine prescribed for specific ailments of attachment and reification. Once their therapeutic purpose is fulfilled, they too are not to be clung to as final descriptions of reality. In this way, the school maintains a “no-position” stance, using conceptual analysis to point beyond concepts without erecting a new dogma in their place.

The name “Three Treatise” reflects the school’s grounding in three key texts: the *Madhyamaka-śāstra* (Zhong lun), the *Śata-śāstra* (Bai lun), and the *Dvādaśanikāya-śāstra* (Shiermen lun). These works provide both the philosophical framework and the dialectical tools through which Sanlun thinkers explore emptiness, dependent origination, and the two truths. The overall orientation is not merely speculative but profoundly soteriological: by deconstructing all reified positions, the mind is freed from clinging, allowing emptiness and conventional appearances to be seen as non-obstructive. In that non-obstruction, the world is neither denied nor absolutized, but engaged from a vantage point of clarity, freedom, and compassion.