quality:corruption, structural:scholar_edition
The Dignāga-Dharmakīrti tradition

Dignāga (c. 480 –540) and Dharmakīrti (c. 6-7th century) were Buddhist philosophers who developed a system of epistemology (pramana) and logic in their debates with the Brahminical philosophers in order to defend Buddhist doctrine. This tradition is called "those who follow reasoning" (Tibetan: rigs pa rjes su 'brang ba); in modern literature, it is sometimes known by the Sanskrit " pramāṇavāda ", or "the Epistemological School." They were associated with the Yogacara and Sautrantika schools, and defended theories held by both of these schools.

Dignāga's influence was profound and led to an "epistemological turn" among all Buddhists and also all Sanskrit language philosophers in India after his death. In the centuries following Dignāga's work, Sanskrit philosophers became much more focused on defending all of their propositions with fully developed theories of knowledge.

The "School of Dignāga" includes later philosophers and commentators like Santabhadra, Dharmottara (8th century), Prajñakaragupta (740–800 C.E.), Jñanasrimitra (975–1025), Ratnakīrti (11th century) and Śaṅkaranandana (fl. c. 9th or 10th century). The epistemology they developed defends the view that there are only two 'instruments of knowledge' or 'valid cognitions' (pramana): "perception" (pratyaksa) and "inference" (anumāṇa). Perception is a non-conceptual awareness of particulars which is bound by causality, while inference is reasonable, linguistic and conceptual.

These Buddhist philosophers argued in favor of the theory of momentariness, the Yogācāra "awareness only" view, the reality of particulars (svalakṣaṇa), atomism, nominalism and the self-reflexive nature of consciousness (svasaṃvedana). They attacked Hindu theories of God (Isvara), universals, the authority of the Vedas, and the existence of a permanent soul (atman).