Eastern Wisdom + Contemplative AI
What is the concept of “threefold truth” in the Sanlun school?
The Sanlun articulation of the threefold truth (三諦, *sāndì*) presents a refined vision of how reality is to be understood from a Madhyamaka perspective. First is the truth of emptiness (*kōngdì* 空諦): all dharmas are devoid of inherent, independent nature and lack any permanent self-essence. Phenomena arise only through dependent origination, and therefore cannot be grasped as self-existing entities. This insight undermines any tendency to reify things, whether material or conceptual, and reveals their fundamentally contingent character.
The second aspect is the truth of provisional or conventional existence (*jiǎdì* 假諦). Although empty of intrinsic nature, phenomena nevertheless appear, function, and can be spoken of in ordinary discourse. Names, distinctions, and causal relations retain pragmatic validity at this level, as long as they are not mistaken for ultimate realities. This truth acknowledges that the everyday world of relationships, responsibilities, and practices is not to be dismissed, but understood as dependently arisen and conceptually designated.
The third is the truth of the Middle (*zhōngdì* 中諦), which is not a separate realm beyond emptiness and conventionality, but the non-dual realization of their inseparability. From this perspective, emptiness and provisional existence are seen as two complementary aspects of the same dharmas, rather than competing descriptions. To recognize only emptiness and deny conventional functioning would fall into nihilism; to affirm only conventional existence as ultimately real would lapse into substantialism. The Middle truth avoids both extremes by seeing that phenomena are empty precisely because they are dependently arisen, and that their conventional efficacy is not undermined but clarified by this emptiness.
Sanlun thought emphasizes that these three truths are simultaneous and mutually inclusive, not a ladder of progressively higher realities. Each truth illuminates the others: emptiness prevents clinging to appearances, conventional truth prevents the reification of emptiness, and the Middle truth discloses their dynamic unity. In this way, the threefold truth serves as a contemplative framework that loosens attachment to any fixed standpoint, including attachment to the very doctrine that facilitates this release.