Dignāga

Dignāga, also known as Diṅnāga, was a pivotal Indian Buddhist philosopher and logician who flourished around the 5th to 6th centuries CE. He is widely credited with founding the school of Indian logic, known as "hetu vidyā," and also contributed significantly to Buddhist atomism. Dignāga's intellectual contributions laid the foundation for the development of deductive logic in India and established the first comprehensive system of Buddhist logic and epistemology, referred to as "pramāṇa." His philosophical school is considered to have initiated an "epistemological turn" in Indian thought, shaping the standard formulation of Buddhist logic and epistemology in both India and Tibet. His influential ideas impacted subsequent Buddhist philosophers like Dharmakīrti, as well as Hindu thinkers of the Nyāya school. Dignāga's epistemology recognized "perception" (pratyakṣa) and "inference" (anumāṇa) as the sole valid means of knowledge. He also proposed the widely adopted theory of "apoha" (exclusion) to explicate linguistic meaning. His works on language, inferential reasoning, and perception were highly influential among later Indian philosophers, with some scholars asserting that understanding Dignāga's arguments is crucial for comprehending the historical trajectory of Indian thought.